CHAUDHARY, S. . Elements and Formal Algebra. International Journal on Recent Trends in Life Science and Mathematics, [S. l.], v. 8, n. 4, p. 31–40, 2021. Disponível em: https://www.ijlsm.org/index.php/ijlsm/article/view/162. Acesso em: 1 dec. 2025.