BARYSHOVETS, P. P. On Infinite Groups with Complemented Non-Abelian Subgroups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 65, n. 11, p. 1443–1455, 2013. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2524. Acesso em: 5 dec. 2025.