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@article{DAN_1963_153_1_a1, author = {Yu. G. Borisovich}, title = {An application of the concept of rotation of a vector field}, journal = {Doklady Akademii Nauk}, pages = {12--15}, publisher = {mathdoc}, volume = {153}, number = {1}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1963_153_1_a1/} }
Yu. G. Borisovich. An application of the concept of rotation of a vector field. Doklady Akademii Nauk, Tome 153 (1963) no. 1, pp. 12-15. http://geodesic.mathdoc.fr/item/DAN_1963_153_1_a1/