N. Li and  Y. M. Cheng,  Discrete Element Modeling on Bearing Capacity Problems.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 114(6). 618 - 625
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10004493.