Feng, Y., Zhao, T., Katao, C., & Zhou, W. (2016). Stochastic discrete element modelling of rough particles-a random normal interaction law. Jisuan Lixue Xuebao/Chinese Journal of Computational Mechanics, 33(4), pp. 629-636. doi:10.7511/jslx201604032

Feng, Yuntian, Ting-ting Zhao, Chun Katao, and Wei Zhou. "Stochastic Discrete Element Modelling of Rough Particles-a Random Normal Interaction Law." Jisuan Lixue Xuebao/Chinese Journal of Computational Mechanics 33, no. 4 (2016): 629-636.

Feng, Yuntian, Ting-ting Zhao, Chun Katao, and Wei Zhou. "Stochastic Discrete Element Modelling of Rough Particles-a Random Normal Interaction Law." Jisuan Lixue Xuebao/Chinese Journal of Computational Mechanics 33.4 (2016): 629-636.