Amit K Parikh, Jishan K Shaikh,. “Numerical Solution of Countercurrent Imbibition in Inclined Homogeneous Porous Medium by Using Polynomial Based Differential Quadrature Method”. PalArch’s Journal of Archaeology of Egypt / Egyptology, vol. 17, no. 9, Oct. 2020, pp. 8045 -4, https://www.archives.palarch.nl/index.php/jae/article/view/5707.