Mohammad M. Toufigh and  Ahad Ouria,  Application of Mapping and Superimposing Rule for Solution of Parabolic PDE in Porous Medium under Cyclic Loading.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2008, vol. 17(5). 92 - 97
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/12751.