Groups whose derived subgroup is not supplemented by any proper subgroup. Armenian Journal of Mathematics, [S. l.], v. 14, n. 10, p. 1–13, 2022. DOI: 10.52737/18291163-2022.14.10-1-13. Disponível em: https://armjmath.sci.am/index.php/ajm/article/view/718.. Acesso em: 3 may. 2024.