CHENG-TAN TUNG , SHU-CHENG LIN , PETERSON JULIAN. Note on lexicographical ordering. International Journal of Emerging Trends in Science and Technology, [S. l.], v. 4, n. 05, p. 5165–5170, 2017. Disponível em: http://ijetst.in/index.php/ijetst/article/view/1101. Acesso em: 23 dec. 2024.