@article{PFMT_2020_2_a13,
     author = {M. N. Konovalova and V. S. Monakhov},
     title = {Finite groups with some subnormal 2-maximal subgroups},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {75--79},
     publisher = {mathdoc},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2020_2_a13/}
}