Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1975_9_a10, author = {S. P. Khomenko}, title = {The extraction of roots in topological groups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {68--75}, publisher = {mathdoc}, number = {9}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1975_9_a10/} }
S. P. Khomenko. The extraction of roots in topological groups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1975), pp. 68-75. http://geodesic.mathdoc.fr/item/IVM_1975_9_a10/