@article{VMUMM_1991_4_a14,
     author = {S. V. Vlasov},
     title = {On perfect bicompact $G$-extensions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {65--67},
     publisher = {mathdoc},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_4_a14/}
}