MANJAREKAR, C. S.; CHAVAN, N. S. An Element Primary to Another Element. The Journal of the Indian Mathematical Society, [S. l.], v. 71, n. 1-4, p. 55–60, 2004. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/22028. Acesso em: 27 apr. 2024.