@article{PFMT_2012_3_a12,
     author = {V. A. Kovaleva and Zh. Xiaoyu},
     title = {Finite groups with given systems of quasipermutable subgroups},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {74--77},
     publisher = {mathdoc},
     number = {3},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2012_3_a12/}
}