HẢI, Ngô Đông. Optimization problems in telecommunication networks: A classification study. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 19, n. 3, p. 281–289, 2012. DOI: 10.15625/1813-9663/19/3/1535. Disponível em: https://vjs.ac.vn/jcc/article/view/1535. Acesso em: 5 dec. 2025.