HẢI, N. Đông. Optimization problems in telecommunication networks: A classification study. Journal of Computer Science and Cybernetics, [S. l.], v. 19, n. 3, p. 281–289, 2012. DOI: 10.15625/1813-9663/19/3/1535. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1535. Acesso em: 1 may. 2024.