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@article{SEMR_2005_2_a21, author = {M. N. Ivko}, title = {Characterizations of some types of $SF$ groups}, journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a}, pages = {308--324}, publisher = {mathdoc}, volume = {2}, year = {2005}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/SEMR_2005_2_a21/} }
M. N. Ivko. Characterizations of some types of $SF$ groups. Sibirskie èlektronnye matematičeskie izvestiâ, Tome 2 (2005), pp. 308-324. http://geodesic.mathdoc.fr/item/SEMR_2005_2_a21/