Dung, Hoàng Đình. “Difference Schemes for Generalized Solutions of Some Elliptic Differential Equations, II”. Journal of Computer Science and Cybernetics 16, no. 2 (April 4, 2013): 9–14. Accessed November 22, 2024. https://vjs.ac.vn/index.php/jcc/article/view/2867.