@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/}
}