Popov, A.V. “Difference Methods for Solving Quasilinear Differential Equations of First Order. Part I”. Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie) 4, no. 4 (December 3, 2003): 16–27. Accessed April 24, 2024. https://en.num-meth.ru/index.php/journal/article/view/110.