@article{PFMT_2018_4_a17,
     author = {V. M. Selkin and N. S. Kosenok},
     title = {On the generalized norm of a finite group},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {103--105},
     publisher = {mathdoc},
     number = {4},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2018_4_a17/}
}