HU, B.; HUANG, J.; ADARCHENKO, N. M. On $\Pi$-permutable subgroups in finite groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 10, p. 1423–1431, 2021. DOI: 10.37863/umzh.v73i10.768. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/768. Acesso em: 5 dec. 2025.