@article{AL_2017_56_6_a2,
     author = {E. P. Vdovin and M. N. Nesterov and D. O. Revin},
     title = {Pronormality of {Hall} subgroups in their normal closure},
     journal = {Algebra i logika},
     pages = {682--690},
     publisher = {mathdoc},
     volume = {56},
     number = {6},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2017_56_6_a2/}
}