@article{PFMT_2019_2_a10,
     author = {V. N. Kniahina and I. K. Chirik},
     title = {Finite factored groups with soluble $\mathbb{X}$-subnormal factors},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {76--80},
     publisher = {mathdoc},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2019_2_a10/}
}