Liang, Ruishi, Zaiton Mat Isa, and Shaymaa M.H Darwish. “Point Source Heavy Metal Migration in Soil With Adsorption and Desorption under Neumann Boundary Condition”. MATEMATIKA 41, no. 3 (November 15, 2025): 361–374. Accessed February 11, 2026. https://matematika.utm.my/index.php/matematika/article/view/1667.