AGARWAL, A. . n-Complete, Reversible Subrings of Sub-Russell, Naturally Multiplicative Fields and an Example of Hilbert. International Journal on Recent Trends in Life Science and Mathematics, [S. l.], v. 5, n. 8, p. 46–55, 2018. Disponível em: https://www.ijlsm.org/index.php/ijlsm/article/view/194. Acesso em: 19 apr. 2024.