KURDACHENKO, L.A.; PYPKA, A.A. On some generalizations of Baer’s theorem. Carpathian Mathematical Publications, [S. l.], v. 6, n. 2, p. 310–316, 2014. DOI: 10.15330/cmp.6.2.310-316. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1361. Acesso em: 21 nov. 2024.