@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/}
}