Hùng, Vũ Văn. “A Difference Method for Approximately Solving the Boundary Heat Propagation Problem With Variable Coefficients”. Journal of Computer Science and Cybernetics 16, no. 3 (April 11, 2013): 32–38. Accessed May 5, 2024. https://vjs.ac.vn/index.php/jcc/article/view/2905.