@article{VMUMM_1983_1_a13,
     author = {A. O. Nazarov},
     title = {Open imbeddings of topological rings},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {51--54},
     year = {1983},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1983_1_a13/}
}