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@article{IM2_1971_5_6_a2, author = {V. M. Sitnikov}, title = {Finite groups with 2-closed or $2'$-closed centralizers of involutions}, journal = {Izvestiya. Mathematics }, pages = {1215--1230}, publisher = {mathdoc}, volume = {5}, number = {6}, year = {1971}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1971_5_6_a2/} }
V. M. Sitnikov. Finite groups with 2-closed or $2'$-closed centralizers of involutions. Izvestiya. Mathematics , Tome 5 (1971) no. 6, pp. 1215-1230. http://geodesic.mathdoc.fr/item/IM2_1971_5_6_a2/