@article{AL_1972_11_4_a2,
     author = {V. P. Shunkov},
     title = {Periodic groups with an almost regular involution},
     journal = {Algebra i logika},
     pages = {470--493},
     year = {1972},
     volume = {11},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1972_11_4_a2/}
}