SEMKO, N.; VELICHKO, T. On the groups, whose all subgroups with infinite special rank are transitively normal . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 8, p. 17–19, 2024. DOI: 10.15407/dopovidi2017.08.017. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/7689. Acesso em: 29 apr. 2025.