A new dislocation-density-function dynamics scheme for computational crystal plasticity by explicit consideration of dislocation elastic interactions
H.S. Leung, P.S.S. Leung, B. Cheng, A.H.W. Ngan, International Journal of Plasticity 67 (2015) 1–25.

The crystal structures of sintered copper nanoparticles: A molecular dynamics study
B. Cheng, A.H.W. Ngan, International Journal of Plasticity 47 (2013) 65–79.