WASET
    Paola Gattinoni and  Vincenzo Francani,  A Tool for Modeling Slope Instability Triggered by Piping.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2009, vol. 32(8). 238 - 244
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/3999.