BANAKH, T. O.; PROTASOV, I. V.; SLOBODIANIUK, S. V. Scattered Subsets of Groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 3, p. 304–312, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1983. Acesso em: 14 apr. 2025.