@article{MZM_1994_55_6_a10,
     author = {V. N. Semenchuk},
     title = {Finite groups with ${\mathfrak f}$-abnormal or ${\mathfrak f}$-subnormal subgroups},
     journal = {Matemati\v{c}eskie zametki},
     pages = {111--115},
     publisher = {mathdoc},
     volume = {55},
     number = {6},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1994_55_6_a10/}
}