@article{PFMT_2015_2_a11,
     author = {V. N. Semenchuk and A. N. Skiba},
     title = {On finite groups in which every subgroup is either $\mathfrak{F}$-subnormal or $\mathfrak{F}$-abnormal},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {72--74},
     publisher = {mathdoc},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2015_2_a11/}
}