LYMAN, F. N.; LUKASHOVA, T. D. Non-periodic locally soluble groups with non-Dedekind locally nilpotent norm of decomposable subgroups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 71, n. 11, p. 1519–1528, 2019. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1532. Acesso em: 5 dec. 2025.