@article{Kuchmenko_Semko_2005, title={Groups with Almost Normal Subgroups of Infinite Rank}, volume={57}, url={https://umj.imath.kiev.ua/index.php/umj/article/view/3618}, abstractNote={We study classes of groups whose subgroups of some infinite ranks are almost normal.}, number={4}, journal={Ukrains’kyi Matematychnyi Zhurnal}, author={Kuchmenko, S. N. and Semko, N. N.}, year={2005}, month={Apr.}, pages={514–532} }