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@article{IM2_1979_13_2_a10, author = {S. A. Syskin}, title = {Finite groups in which centralizers of four-subgroups are 2-groups}, journal = {Izvestiya. Mathematics }, pages = {417--434}, publisher = {mathdoc}, volume = {13}, number = {2}, year = {1979}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1979_13_2_a10/} }
S. A. Syskin. Finite groups in which centralizers of four-subgroups are 2-groups. Izvestiya. Mathematics , Tome 13 (1979) no. 2, pp. 417-434. http://geodesic.mathdoc.fr/item/IM2_1979_13_2_a10/