KNYAGINA, V. N.; MONAKHOV, V. S. On the Derived Length of a Finite Group with Complemented Subgroups of Order $p^2$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 7, p. 874–881, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2030. Acesso em: 5 dec. 2025.