Xiukun Wang*, and James J. Sheng*. “A Self-Similar Analytical Solution of Spontaneous and Forced Imbibition in Porous Media”. Advances in Geo-Energy Research, vol. 2, no. 3, June 2018, pp. 260-8, https://ager.yandypress.com/index.php/2207-9963/article/view/47.