@article{2836,
  abstract     = {We study the automatic synthesis of fair non-repudiation protocols, a class of fair exchange protocols, used for digital contract signing. First, we show how to specify the objectives of the participating agents and the trusted third party as path formulas in linear temporal logic and prove that the satisfaction of these objectives imply fairness; a property required of fair exchange protocols. We then show that weak (co-operative) co-synthesis and classical (strictly competitive) co-synthesis fail, whereas assume-guarantee synthesis (AGS) succeeds. We demonstrate the success of AGS as follows: (a) any solution of AGS is attack-free; no subset of participants can violate the objectives of the other participants; (b) the Asokan-Shoup-Waidner certified mail protocol that has known vulnerabilities is not a solution of AGS; (c) the Kremer-Markowitch non-repudiation protocol is a solution of AGS; and (d) AGS presents a new and symmetric fair non-repudiation protocol that is attack-free. To our knowledge this is the first application of synthesis to fair non-repudiation protocols, and our results show how synthesis can both automatically discover vulnerabilities in protocols and generate correct protocols. The solution to AGS can be computed efficiently as the secure equilibrium solution of three-player graph games. },
  author       = {Chatterjee, Krishnendu and Raman, Vishwanath},
  journal      = {Formal Aspects of Computing},
  number       = {4},
  pages        = {825 -- 859},
  publisher    = {Springer},
  title        = {{Assume-guarantee synthesis for digital contract signing}},
  doi          = {10.1007/s00165-013-0283-6},
  volume       = {26},
  year         = {2013},
}

@article{2837,
  abstract     = {We consider a general class of N × N random matrices whose entries hij are independent up to a symmetry constraint, but not necessarily identically distributed. Our main result is a local semicircle law which improves previous results [17] both in the bulk and at the edge. The error bounds are given in terms of the basic small parameter of the model, maxi,j E|hij|2. As a consequence, we prove the universality of the local n-point correlation functions in the bulk spectrum for a class of matrices whose entries do not have comparable variances, including random band matrices with band width W ≫N1-εn with some εn &gt; 0 and with a negligible mean-field component. In addition, we provide a coherent and pedagogical proof of the local semicircle law, streamlining and strengthening previous arguments from [17, 19, 6].},
  author       = {Erdös, László and Knowles, Antti and Yau, Horng and Yin, Jun},
  journal      = {Electronic Journal of Probability},
  number       = {59},
  pages        = {1--58},
  publisher    = {Institute of Mathematical Statistics},
  title        = {{The local semicircle law for a general class of random matrices}},
  doi          = {10.1214/EJP.v18-2473},
  volume       = {18},
  year         = {2013},
}

@article{2838,
  abstract     = {Individuals with Down syndrome (DS) present important motor deficits that derive from altered motor development of infants and young children. DYRK1A, a candidate gene for DS abnormalities has been implicated in motor function due to its expression in motor nuclei in the adult brain, and its overexpression in DS mouse models leads to hyperactivity and altered motor learning. However, its precise role in the adult motor system, or its possible involvement in postnatal locomotor development has not yet been clarified. During the postnatal period we observed time-specific expression of Dyrk1A in discrete subsets of brainstem nuclei and spinal cord motor neurons. Interestingly, we describe for the first time the presence of Dyrk1A in the presynaptic terminal of the neuromuscular junctions and its axonal transport from the facial nucleus, suggesting a function for Dyrk1A in these structures. Relevant to DS, Dyrk1A overexpression in transgenic mice (TgDyrk1A) produces motor developmental alterations possibly contributing to DS motor phenotypes and modifies the numbers of motor cholinergic neurons, suggesting that the kinase may have a role in the development of the brainstem and spinal cord motor system.},
  author       = {Arquè Fuste, Gloria and Casanovas, Anna and Dierssen, Mara},
  journal      = {PLoS One},
  number       = {1},
  publisher    = {Public Library of Science},
  title        = {{Dyrk1A is dynamically expressed on subsets of motor neurons and in the neuromuscular junction: Possible role in Down syndrome}},
  doi          = {10.1371/journal.pone.0054285},
  volume       = {8},
  year         = {2013},
}

@article{2839,
  abstract     = {Directional guidance of cells via gradients of chemokines is considered crucial for embryonic development, cancer dissemination, and immune responses. Nevertheless, the concept still lacks direct experimental confirmation in vivo. Here, we identify endogenous gradients of the chemokine CCL21 within mouse skin and show that they guide dendritic cells toward lymphatic vessels. Quantitative imaging reveals depots of CCL21 within lymphatic endothelial cells and steeply decaying gradients within the perilymphatic interstitium. These gradients match the migratory patterns of the dendritic cells, which directionally approach vessels from a distance of up to 90-micrometers. Interstitial CCL21 is immobilized to heparan sulfates, and its experimental delocalization or swamping the endogenous gradients abolishes directed migration. These findings functionally establish the concept of haptotaxis, directed migration along immobilized gradients, in tissues.},
  author       = {Weber, Michele and Hauschild, Robert and Schwarz, Jan and Moussion, Christine and De Vries, Ingrid and Legler, Daniel and Luther, Sanjiv and Bollenbach, Mark Tobias and Sixt, Michael K},
  journal      = {Science},
  number       = {6117},
  pages        = {328 -- 332},
  publisher    = {American Association for the Advancement of Science},
  title        = {{Interstitial dendritic cell guidance by haptotactic chemokine gradients}},
  doi          = {10.1126/science.1228456},
  volume       = {339},
  year         = {2013},
}

@article{2840,
  abstract     = {It is known that the entorhinal cortex plays a crucial role in spatial cognition in rodents. Neuroanatomical and electrophysiological data suggest that there is a functional distinction between 2 subregions within the entorhinal cortex, the medial entorhinal cortex (MEC), and the lateral entorhinal cortex (LEC). Rats with MEC or LEC lesions were trained in 2 navigation tasks requiring allothetic (water maze task) or idiothetic (path integration) information processing and 2-object exploration tasks allowing testing of spatial and nonspatial processing of intramaze objects. MEC lesions mildly affected place navigation in the water maze and produced a path integration deficit. They also altered the processing of spatial information in both exploration tasks while sparing the processing of nonspatial information. LEC lesions did not affect navigation abilities in both the water maze and the path integration tasks. They altered spatial and nonspatial processing in the object exploration task but not in the one-trial recognition task. Overall, these results indicate that the MEC is important for spatial processing and path integration. The LEC has some influence on both spatial and nonspatial processes, suggesting that the 2 kinds of information interact at the level of the EC.},
  author       = {Van Cauter, Tiffany and Camon, Jeremy and Alvernhe, Alice and Elduayen, Coralie and Sargolini, Francesca and Save, Étienne},
  journal      = {Cerebral Cortex},
  number       = {2},
  pages        = {451 -- 459},
  publisher    = {Oxford University Press},
  title        = {{Distinct roles of medial and lateral entorhinal cortex in spatial cognition}},
  doi          = {10.1093/cercor/bhs033},
  volume       = {23},
  year         = {2013},
}

@article{2841,
  abstract     = {In zebrafish early development, blastoderm cells undergo extensive radial intercalations, triggering the spreading of the blastoderm over the yolk cell and thereby initiating embryonic body axis formation. Now reporting in Developmental Cell, Song et al. (2013) demonstrate a critical function for EGF-dependent E-cadherin endocytosis in promoting blastoderm cell intercalations.},
  author       = {Morita, Hitoshi and Heisenberg, Carl-Philipp J},
  journal      = {Developmental Cell},
  number       = {6},
  pages        = {567 -- 569},
  publisher    = {Cell Press},
  title        = {{Holding on and letting go: Cadherin turnover in cell intercalation}},
  doi          = {10.1016/j.devcel.2013.03.007},
  volume       = {24},
  year         = {2013},
}

@article{2842,
  abstract     = {We outline two approaches to inference of neighbourhood size, N, and dispersal rate, σ2, based on either allele frequencies or on the lengths of sequence blocks that are shared between genomes. Over intermediate timescales (10-100 generations, say), populations that live in two dimensions approach a quasi-equilibrium that is independent of both their local structure and their deeper history. Over such scales, the standardised covariance of allele frequencies (i.e. pairwise FS T) falls with the logarithm of distance, and depends only on neighbourhood size, N, and a 'local scale', κ; the rate of gene flow, σ2, cannot be inferred. We show how spatial correlations can be accounted for, assuming a Gaussian distribution of allele frequencies, giving maximum likelihood estimates of N and κ. Alternatively, inferences can be based on the distribution of the lengths of sequence that are identical between blocks of genomes: long blocks (&gt;0.1 cM, say) tell us about intermediate timescales, over which we assume a quasi-equilibrium. For large neighbourhood size, the distribution of long blocks is given directly by the classical Wright-Malécot formula; this relationship can be used to infer both N and σ2. With small neighbourhood size, there is an appreciable chance that recombinant lineages will coalesce back before escaping into the distant past. For this case, we show that if genomes are sampled from some distance apart, then the distribution of lengths of blocks that are identical in state is geometric, with a mean that depends on N and σ2.},
  author       = {Barton, Nicholas H and Etheridge, Alison and Kelleher, Jerome and Véber, Amandine},
  journal      = {Theoretical Population Biology},
  number       = {1},
  pages        = {105 -- 119},
  publisher    = {Elsevier},
  title        = {{Inference in two dimensions: Allele frequencies versus lengths of shared sequence blocks}},
  doi          = {10.1016/j.tpb.2013.03.001},
  volume       = {87},
  year         = {2013},
}

@inproceedings{2843,
  abstract     = {Mathematical objects can be measured unambiguously, but not so objects from our physical world. Even the total length of tubelike shapes has its difficulties. We introduce a combination of geometric, probabilistic, and topological methods to design a stable length estimate for tube-like shapes; that is: one that is insensitive to small shape changes.},
  author       = {Edelsbrunner, Herbert and Pausinger, Florian},
  booktitle    = {17th IAPR International Conference on Discrete Geometry for Computer Imagery},
  location     = {Seville, Spain},
  pages        = {XV -- XIX},
  publisher    = {Springer},
  title        = {{Stable length estimates of tube-like shapes}},
  doi          = {10.1007/978-3-642-37067-0},
  volume       = {7749},
  year         = {2013},
}

@article{2844,
  abstract     = {As soon as a seed germinates, plant growth relates to gravity to ensure that the root penetrates the soil and the shoot expands aerially. Whereas mechanisms of positive and negative orthogravitropism of primary roots and shoots are relatively well understood [1-3], lateral organs often show more complex growth behavior [4]. Lateral roots (LRs) seemingly suppress positive gravitropic growth and show a defined gravitropic set-point angle (GSA) that allows radial expansion of the root system (plagiotropism) [3, 4]. Despite its eminent importance for root architecture, it so far remains completely unknown how lateral organs partially suppress positive orthogravitropism. Here we show that the phytohormone auxin steers GSA formation and limits positive orthogravitropism in LR. Low and high auxin levels/signaling lead to radial or axial root systems, respectively. At a cellular level, it is the auxin transport-dependent regulation of asymmetric growth in the elongation zone that determines GSA. Our data suggest that strong repression of PIN4/PIN7 and transient PIN3 expression limit auxin redistribution in young LR columella cells. We conclude that PIN activity, by temporally limiting the asymmetric auxin fluxes in the tip of LRs, induces transient, differential growth responses in the elongation zone and, consequently, controls root architecture.},
  author       = {Rosquete, Michel and Von Wangenheim, Daniel and Marhavy, Peter and Barbez, Elke and Stelzer, Ernst and Benková, Eva and Maizel, Alexis and Kleine Vehn, Jürgen},
  journal      = {Current Biology},
  number       = {9},
  pages        = {817 -- 822},
  publisher    = {Cell Press},
  title        = {{An auxin transport mechanism restricts positive orthogravitropism in lateral roots}},
  doi          = {10.1016/j.cub.2013.03.064},
  volume       = {23},
  year         = {2013},
}

@article{2845,
  abstract     = {At synapses formed between dissociated neurons, about half of all synaptic vesicles are refractory to evoked release, forming the so-called &quot;resting pool.&quot; Here, we use optical measurements of vesicular pH to study developmental changes in pool partitioning and vesicle cycling in cultured hippocampal slices. Two-photon imaging of a genetically encoded two-color release sensor (ratio-sypHy) allowed us to perform calibrated measurements at individual Schaffer collateral boutons. Mature boutons released a large fraction of their vesicles during simulated place field activity, and vesicle retrieval rates were 7-fold higher compared to immature boutons. Saturating stimulation mobilized essentially all vesicles at mature synapses. Resting pool formation and a concomitant reduction in evoked release was induced by chronic depolarization but not by acute inhibition of the protein phosphatase calcineurin. We conclude that synapses in CA1 undergo a prominent refinement of vesicle use during early postnatal development that is not recapitulated in dissociated neuronal culture.},
  author       = {Rose, Tobias and Schönenberger, Philipp and Jezek, Karel and Oertner, Thomas},
  journal      = {Neuron},
  number       = {6},
  pages        = {1109 -- 1121},
  publisher    = {Elsevier},
  title        = {{Developmental refinement of vesicle cycling at Schaffer collateral synapses}},
  doi          = {10.1016/j.neuron.2013.01.021},
  volume       = {77},
  year         = {2013},
}

@inproceedings{2847,
  abstract     = {Depth-Bounded Systems form an expressive class of well-structured transition systems. They can model a wide range of concurrent infinite-state systems including those with dynamic thread creation, dynamically changing communication topology, and complex shared heap structures. We present the first method to automatically prove fair termination of depth-bounded systems. Our method uses a numerical abstraction of the system, which we obtain by systematically augmenting an over-approximation of the system’s reachable states with a finite set of counters. This numerical abstraction can be analyzed with existing termination provers. What makes our approach unique is the way in which it exploits the well-structuredness of the analyzed system. We have implemented our work in a prototype tool and used it to automatically prove liveness properties of complex concurrent systems, including nonblocking algorithms such as Treiber’s stack and several distributed processes. Many of these examples are beyond the scope of termination analyses that are based on traditional counter abstractions.},
  author       = {Bansal, Kshitij and Koskinen, Eric and Wies, Thomas and Zufferey, Damien},
  editor       = {Piterman, Nir and Smolka, Scott},
  location     = {Rome, Italy},
  pages        = {62 -- 77},
  publisher    = {Springer},
  title        = {{Structural Counter Abstraction}},
  doi          = {10.1007/978-3-642-36742-7_5},
  volume       = {7795},
  year         = {2013},
}

@article{2850,
  abstract     = {Recent work emphasizes that the maximum entropy principle provides a bridge between statistical mechanics models for collective behavior in neural networks and experiments on networks of real neurons. Most of this work has focused on capturing the measured correlations among pairs of neurons. Here we suggest an alternative, constructing models that are consistent with the distribution of global network activity, i.e. the probability that K out of N cells in the network generate action potentials in the same small time bin. The inverse problem that we need to solve in constructing the model is analytically tractable, and provides a natural 'thermodynamics' for the network in the limit of large N. We analyze the responses of neurons in a small patch of the retina to naturalistic stimuli, and find that the implied thermodynamics is very close to an unusual critical point, in which the entropy (in proper units) is exactly equal to the energy. © 2013 IOP Publishing Ltd and SISSA Medialab srl.
},
  author       = {Tkacik, Gasper and Marre, Olivier and Mora, Thierry and Amodei, Dario and Berry, Michael and Bialek, William},
  journal      = {Journal of Statistical Mechanics Theory and Experiment},
  number       = {3},
  publisher    = {IOP Publishing Ltd.},
  title        = {{The simplest maximum entropy model for collective behavior in a neural network}},
  doi          = {10.1088/1742-5468/2013/03/P03011},
  volume       = {2013},
  year         = {2013},
}

@article{2851,
  abstract     = {The number of possible activity patterns in a population of neurons grows exponentially with the size of the population. Typical experiments explore only a tiny fraction of the large space of possible activity patterns in the case of populations with more than 10 or 20 neurons. It is thus impossible, in this undersampled regime, to estimate the probabilities with which most of the activity patterns occur. As a result, the corresponding entropy - which is a measure of the computational power of the neural population - cannot be estimated directly. We propose a simple scheme for estimating the entropy in the undersampled regime, which bounds its value from both below and above. The lower bound is the usual 'naive' entropy of the experimental frequencies. The upper bound results from a hybrid approximation of the entropy which makes use of the naive estimate, a maximum entropy fit, and a coverage adjustment. We apply our simple scheme to artificial data, in order to check their accuracy; we also compare its performance to those of several previously defined entropy estimators. We then apply it to actual measurements of neural activity in populations with up to 100 cells. Finally, we discuss the similarities and differences between the proposed simple estimation scheme and various earlier methods. © 2013 IOP Publishing Ltd and SISSA Medialab srl.},
  author       = {Berry, Michael and Tkacik, Gasper and Dubuis, Julien and Marre, Olivier and Da Silveira, Ravá},
  journal      = {Journal of Statistical Mechanics Theory and Experiment},
  number       = {3},
  publisher    = {IOP Publishing Ltd.},
  title        = {{A simple method for estimating the entropy of neural activity}},
  doi          = {10.1088/1742-5468/2013/03/P03015},
  volume       = {2013},
  year         = {2013},
}

@article{2853,
  abstract     = {High relatedness among interacting individuals has generally been considered a precondition for the evolution of altruism. However, kin-selection theory also predicts the evolution of altruism when relatedness is low, as long as the cost of the altruistic act is minor compared with its benefit. Here, we demonstrate evidence for a low-cost altruistic act in bacteria. We investigated Escherichia coli responding to the attack of an obligately lytic phage by committing suicide in order to prevent parasite transmission to nearby relatives. We found that bacterial suicide provides large benefits to survivors at marginal costs to committers. The cost of suicide was low, because infected cells are moribund, rapidly dying upon phage infection, such that no more opportunity for reproduction remains. As a consequence of its marginal cost, host suicide was selectively favoured even when relatedness between committers and survivors approached zero. Altogether, our findings demonstrate that low-cost suicide can evolve with ease, represents an effective host-defence strategy, and seems to be widespread among microbes. Moreover, low-cost suicide might also occur in higher organisms as exemplified by infected social insect workers leaving the colony to die in isolation.},
  author       = {Refardt, Dominik and Bergmiller, Tobias and Kümmerli, Rolf},
  issn         = {1471-2954},
  journal      = {Proceedings of the Royal Society of London Series B Biological Sciences},
  number       = {1759},
  publisher    = {The Royal Society},
  title        = {{Altruism can evolve when relatedness is low: Evidence from bacteria committing suicide upon phage infection}},
  doi          = {10.1098/rspb.2012.3035},
  volume       = {280},
  year         = {2013},
}

@article{2854,
  abstract     = {We consider concurrent games played on graphs. At every round of a game, each player simultaneously and independently selects a move; the moves jointly determine the transition to a successor state. Two basic objectives are the safety objective to stay forever in a given set of states, and its dual, the reachability objective to reach a given set of states. First, we present a simple proof of the fact that in concurrent reachability games, for all ε&gt;0, memoryless ε-optimal strategies exist. A memoryless strategy is independent of the history of plays, and an ε-optimal strategy achieves the objective with probability within ε of the value of the game. In contrast to previous proofs of this fact, our proof is more elementary and more combinatorial. Second, we present a strategy-improvement (a.k.a. policy-iteration) algorithm for concurrent games with reachability objectives. Finally, we present a strategy-improvement algorithm for turn-based stochastic games (where each player selects moves in turns) with safety objectives. Our algorithms yield sequences of player-1 strategies which ensure probabilities of winning that converge monotonically (from below) to the value of the game. © 2012 Elsevier Inc.},
  author       = {Chatterjee, Krishnendu and De Alfaro, Luca and Henzinger, Thomas A},
  journal      = {Journal of Computer and System Sciences},
  number       = {5},
  pages        = {640 -- 657},
  publisher    = {Elsevier},
  title        = {{Strategy improvement for concurrent reachability and turn based stochastic safety games}},
  doi          = {10.1016/j.jcss.2012.12.001},
  volume       = {79},
  year         = {2013},
}

@article{2855,
  abstract     = {Genomic imprinting leads to preferred expression of either the maternal or paternal alleles of a subset of genes. Imprinting is essential for mammalian development, and its deregulation causes many diseases. However, the functional relevance of imprinting at the cellular level is poorly understood for most imprinted genes. We used mosaic analysis with double markers (MADM) in mice to create uniparental disomies (UPDs) and to visualize imprinting effects with single-cell resolution. Although chromosome 12 UPD did not produce detectable phenotypes, chromosome 7 UPD caused highly significant paternal growth dominance in the liver and lung, but not in the brain or heart. A single gene on chromosome 7, encoding the secreted insulin-like growth factor 2 (IGF2), accounts for most of the paternal dominance effect. Mosaic analyses implied additional imprinted loci on chromosome 7 acting cell autonomously to transmit the IGF2 signal. Our study reveals chromosome- and cell-type specificity of genomic imprinting effects.},
  author       = {Hippenmeyer, Simon and Johnson, Randy and Luo, Liqun},
  journal      = {Cell Reports},
  number       = {3},
  pages        = {960 -- 967},
  publisher    = {Cell Press},
  title        = {{Mosaic analysis with double markers reveals cell type specific paternal growth dominance}},
  doi          = {10.1016/j.celrep.2013.02.002},
  volume       = {3},
  year         = {2013},
}

@article{2856,
  abstract     = {G protein–coupled receptors (GPCRs), the largest family of membrane signaling proteins, respond to neurotransmitters, hormones and small environmental molecules. The neuronal function of many GPCRs has been difficult to resolve because of an inability to gate them with subtype specificity, spatial precision, speed and reversibility. To address this, we developed an approach for opto-chemical engineering of native GPCRs. We applied this to the metabotropic glutamate receptors (mGluRs) to generate light-agonized and light-antagonized mGluRs (LimGluRs). The light-agonized LimGluR2, on which we focused, was fast, bistable and supported multiple rounds of on/off switching. Light gated two of the primary neuronal functions of mGluR2: suppression of excitability and inhibition of neurotransmitter release. We found that the light-antagonized tool LimGluR2-block was able to manipulate negative feedback of synaptically released glutamate on transmitter release. We generalized the optical control to two additional family members: mGluR3 and mGluR6. This system worked in rodent brain slices and in zebrafish in vivo, where we found that mGluR2 modulated the threshold for escape behavior. These light-gated mGluRs pave the way for determining the roles of mGluRs in synaptic plasticity, memory and disease.},
  author       = {Levitz, Joshua and Pantoja, Carlos and Gaub, Benjamin and Janovjak, Harald L and Reiner, Andreas and Hoagland, Adam and Schoppik, David and Kane, Brian and Stawski, Philipp and Schier, Alexander and Trauner, Dirk and Isacoff, Ehud},
  journal      = {Nature Neuroscience},
  pages        = {507 -- 516},
  publisher    = {Nature Publishing Group},
  title        = {{Optical control of metabotropic glutamate receptors}},
  doi          = {10.1038/nn.3346},
  volume       = {16},
  year         = {2013},
}

@article{2857,
  abstract     = {In the vibrant field of optogenetics, optics and genetic targeting are combined to commandeer cellular functions, such as the neuronal action potential, by optically stimulating light-sensitive ion channels expressed in the cell membrane. One broadly applicable manifestation of this approach are covalently attached photochromic tethered ligands (PTLs) that allow activating ligand-gated ion channels with outstanding spatial and temporal resolution. Here, we describe all steps towards the successful development and application of PTL-gated ion channels in cell lines and primary cells. The basis for these experiments forms a combination of molecular modeling, genetic engineering, cell culture, and electrophysiology. The light-gated glutamate receptor (LiGluR), which consists of the PTL-functionalized GluK2 receptor, serves as a model.},
  author       = {Szobota, Stephanie and Mckenzie, Catherine and Janovjak, Harald L},
  journal      = {Methods in Molecular Biology},
  pages        = {417 -- 435},
  publisher    = {Springer},
  title        = {{Optical control of ligand-gated ion channels}},
  doi          = {10.1007/978-1-62703-351-0_32},
  volume       = {998},
  year         = {2013},
}

@article{2858,
  abstract     = {Tumor growth is caused by the acquisition of driver mutations, which enhance the net reproductive rate of cells. Driver mutations may increase cell division, reduce cell death, or allow cells to overcome density-limiting effects. We study the dynamics of tumor growth as one additional driver mutation is acquired. Our models are based on two-type branching processes that terminate in either tumor disappearance or tumor detection. In our first model, both cell types grow exponentially, with a faster rate for cells carrying the additional driver. We find that the additional driver mutation does not affect the survival probability of the lesion, but can substantially reduce the time to reach the detectable size if the lesion is slow growing. In our second model, cells lacking the additional driver cannot exceed a fixed carrying capacity, due to density limitations. In this case, the time to detection depends strongly on this carrying capacity. Our model provides a quantitative framework for studying tumor dynamics during different stages of progression. We observe that early, small lesions need additional drivers, while late stage metastases are only marginally affected by them. These results help to explain why additional driver mutations are typically not detected in fast-growing metastases.},
  author       = {Reiter, Johannes and Božić, Ivana and Allen, Benjamin and Chatterjee, Krishnendu and Nowak, Martin},
  journal      = {Evolutionary Applications},
  number       = {1},
  pages        = {34 -- 45},
  publisher    = {Wiley-Blackwell},
  title        = {{The effect of one additional driver mutation on tumor progression}},
  doi          = {10.1111/eva.12020},
  volume       = {6},
  year         = {2013},
}

@article{2859,
  abstract     = {Given a continuous function f:X-R on a topological space, we consider the preimages of intervals and their homology groups and show how to read the ranks of these groups from the extended persistence diagram of f. In addition, we quantify the robustness of the homology classes under perturbations of f using well groups, and we show how to read the ranks of these groups from the same extended persistence diagram. The special case X=R3 has ramifications in the fields of medical imaging and scientific visualization.},
  author       = {Bendich, Paul and Edelsbrunner, Herbert and Morozov, Dmitriy and Patel, Amit},
  journal      = {Homology, Homotopy and Applications},
  number       = {1},
  pages        = {51 -- 72},
  publisher    = {International Press},
  title        = {{Homology and robustness of level and interlevel sets}},
  doi          = {10.4310/HHA.2013.v15.n1.a3},
  volume       = {15},
  year         = {2013},
}

