HAMED , A. A note on $S$-Nakayama’s lemma. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 72, n. 1, p. 142–144, 2020. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2332. Acesso em: 5 dec. 2025.