Chin-Yu Lee and  Iau-Teh Wang,  Analysis of Highway Slope Failure by an Application of the Stereographic Projection.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2011, vol. 51(3). 122 - 129
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/3320.