Characterizations of some types of S F groups. Ivko, M.N. — 2005 Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
Characterization of Chernikov groups in the class of Shunkov groups with Sylow four-subgroups. Ivko, M.N. — 2006 Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]