LYMAN, F. N. On Groups with Minimality Condition for Noninvariant Abelian pd-Subgroups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 57, n. 2, p. 265–270, 2005. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3594. Acesso em: 17 apr. 2025.