@article{MZM_2019_105_2_a7,
     author = {V. S. Monakhov},
     title = {Groups with {Formation} {Subnormal} $2${-Maximal} {Subgroups}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {269--277},
     publisher = {mathdoc},
     volume = {105},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2019_105_2_a7/}
}