GRINBERG, Anatoly A. Two criteria in Fermat infinite descent method. Open Science Journal, [S. l.], v. 2, n. 4, 2017. DOI: 10.23954/osj.v2i4.1278. Disponível em: https://osjournal.org/ojs/index.php/OSJ/article/view/1278. Acesso em: 11 sep. 2025.