STAROSTIN, A. I. On the Frobenius groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 23, n. 5, p. 629–639, 1971. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8334. Acesso em: 6 dec. 2025.