RAIEVSKA, I.; RAIEVSKA, M. Groups of order $p^4$ as additive groups of local near-rings. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 76, n. 6, p. 890–906, 2024. DOI: 10.3842/umzh.v76i5.8053. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8053. Acesso em: 5 dec. 2025.