ZUZUK, L. I. Finite nondispersible groups all subgroups of which with nonprimary index are metacyclic. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 47, n. 6, p. 755–759, 1995. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5468. Acesso em: 7 apr. 2025.