Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1995_1_a1, author = {A. Azevedo}, title = {Extensions by means of local groups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {32--37}, publisher = {mathdoc}, number = {1}, year = {1995}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1995_1_a1/} }
A. Azevedo. Extensions by means of local groups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1995), pp. 32-37. http://geodesic.mathdoc.fr/item/IVM_1995_1_a1/