@article{IVM_2020_8_a3,
     author = {S. F. Kamornikov and V. N. Tyutyanov},
     title = {A criterion for the $\sigma$-subnormality of a subgroup in a finite $3'$-group},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {36--43},
     publisher = {mathdoc},
     number = {8},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2020_8_a3/}
}