@article{PFMT_2011_1_a13,
     author = {A. V. Shnyparkov},
     title = {Supersolvability of a finite group with $\mu X$-supplemented subgroups},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {84--88},
     publisher = {mathdoc},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2011_1_a13/}
}