WASET
    M. N. Nwodo and  Y. P. Cheng and  N. H. Minh,  Sand Production Modelled with Darcy Fluid Flow Using Discrete Element Method.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 110(2). 178 - 185
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10003689.