WASET
    Alaa H. J. Al-Rkaby and  A. Chegenizadeh and  H. R. Nikraz,  Anisotropic Shear Strength of Sand Containing Plastic Fine Materials.   journal   = {International Journal of Geotechnical and Geological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 123(3). 234 - 237
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/10006545.