@article{IM2_1981_16_2_a2,
     author = {L. S. Kazarin},
     title = {Tests for the nonsimplicity of factorable groups},
     journal = {Izvestiya. Mathematics},
     pages = {261--278},
     year = {1981},
     volume = {16},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1981_16_2_a2/}
}