@article{MZM_1972_11_3_a6,
     author = {T. G. Deshura},
     title = {On noncommutative serving extensions of groups},
     journal = {Matemati\v{c}eskie zametki},
     pages = {283--291},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1972_11_3_a6/}
}