On the existence of f -local subgroups in a group. Sozutov, A.I.; Yanchenko, M.V. — 2006 Sibirskij Matematicheskij Zhurnal
The F -local subgroups of the groups with a generalized finite element of order 2 or 4. Sozutov, A.I.; Yanchenko, M.V. — 2007 Sibirskij Matematicheskij Zhurnal