BANAKH, T. O.; PROTASOV, I. V.; PROTASOVA, K. D. Descriptive complexity of the sizes of subsets of groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 69, n. 9, p. 1280–1283, 2017. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1780. Acesso em: 5 dec. 2025.