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@article{DAN_1966_171_5_a4, author = {V. Golo}, title = {On some differential topological invariants of multiply connected domains}, journal = {Doklady Akademii Nauk}, pages = {1030--1032}, publisher = {mathdoc}, volume = {171}, number = {5}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_171_5_a4/} }
V. Golo. On some differential topological invariants of multiply connected domains. Doklady Akademii Nauk, Tome 171 (1966) no. 5, pp. 1030-1032. http://geodesic.mathdoc.fr/item/DAN_1966_171_5_a4/