@article{ADM_2021_31_1_a6,
     author = {L. A. Kurdachenko and N. N. Semko},
     title = {On the structure of some groups having finite contranormal subgroups},
     journal = {Algebra and discrete mathematics},
     pages = {109--119},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2021_31_1_a6/}
}