LYMAN, F. N.; LUKASHOVA, T. D. On the Norm of Decomposable Subgroups in Locally Finite Groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 4, p. 480–488, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1998. Acesso em: 5 dec. 2025.