Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_2020_3_a7, author = {R. N. Gumerov}, title = {On covering groups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {85--91}, publisher = {mathdoc}, number = {3}, year = {2020}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2020_3_a7/} }
R. N. Gumerov. On covering groups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (2020), pp. 85-91. http://geodesic.mathdoc.fr/item/IVM_2020_3_a7/