, S. C. S. R. S. V. On Right Orthodox ?- Semigroup. International Journal on Recent Trends in Life Science and Mathematics, [S. l.], v. 1, n. 5, p. 01–23, 2014. Disponível em: https://ijlsm.org/index.php/ijlsm/article/view/20. Acesso em: 18 sep. 2025.