@article{AL_1976_15_3_a2,
     author = {A. P. Kovalenko},
     title = {A characterization of groups of {Janko-Ree} type and the {Hall-Janko}},
     journal = {Algebra i logika},
     pages = {292--299},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1976_15_3_a2/}
}