VERBOVSKIY, V. On commutativity of circularly ordered c-o-stable groups. Eurasian Mathematical Journal, [S. l.], v. 9, n. 4, p. 91–98, 2018. DOI: 10.32523/2077-9879-2018-9-4-91-98. Disponível em: https://emj.enu.kz/index.php/main/article/view/133. Acesso em: 30 sep. 2026.