UDAR, D.; SHARMA, R. K.; SRIVASTAVA, J. B. Strongly $P$ -clean and semi-Boolean group rings. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 71, n. 12, p. 1717–1722, 2020. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2289. Acesso em: 14 apr. 2025.