LÂN, L. T. technique for establish the table and the graph of four parameters. Journal of Computer Science and Cybernetics, [S. l.], v. 20, n. 3, p. 270–282, 2012. DOI: 10.15625/1813-9663/20/3/1489. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1489. Acesso em: 3 may. 2024.