SALAHUDDIN. An Amazing Result Involving Contiguous Relation : A Comutational Approach. Global Journal of Science Frontier Research, [S. l.], v. 14, n. F4, p. 45–52, 2014. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/1261. Acesso em: 5 may. 2024.