Semko N, Velichko T. On the groups, whose all subgroups with infinite special rank are transitively normal . Dopov. Nac. akad. nauk Ukr. [Internet]. 2017 Aug. 28 [cited 2026 Jun. 20];(8):17-9. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/7689