NIKMEHR, M. J. Strongly Semicommutative Rings Relative to a Monoid. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 11, p. 1528–1539, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2243. Acesso em: 5 dec. 2025.