7I tasca Consuliting Group, Inc. ELAC -- 2D ( Fast lagrangian Analysis of Continual in 2Demensions ) VersionS. 0, User' s Manual [Z]. USA:[ S. n.]. 1997.
8C. Wang, D. D. Tannant, P. A. Lilly. Numerical analysis of the stability of heavily jointed rock slopes using PFC2D. [ J]. International Journal of Rock Mechanics & Mining Sciences, 2003(40) :415 -424.
9Nick Thompson, Matthew R. Bennett, Nick Petford Development of Characteristic Volcanic Debris Avalanche Deposit Structures:New Insight from Distinct Element Simulations [J]. Journal of Volcanology and Geothermal Research,2010 ( 192 ) : 191 - 200.
10Calvctti, F. , Crosta, G. and Tatarella, M. Numerical Simulation of Dry Granular Flows: from There Production of Small Scale Experiments to the Prediction of Rock Avalanches Rivista Ltaianal [J]. Di Gcotecnica,2000(2) :21 -38.