Putra, Gusrian, Leo Hari Wiryanto, and Ratna Widyawati. “An Implicit Finite Difference Method for Thin Film Flow”. Journal of the Indonesian Mathematical Society 29, no. 1 (March 30, 2023): 99–105. Accessed October 5, 2024. http://jims-a.org./index.php/jimsa/article/view/1110.