@article{AL_2013_52_1_a8,
     author = {L. A. Shemetkov},
     title = {Supplements to normal subgroups of finite groups},
     journal = {Algebra i logika},
     pages = {109--119},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2013_52_1_a8/}
}