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@article{DAN_1969_187_1_a1, author = {A. M. Vinogradov}, title = {A {Morse} theory of nonmultiple closed curves}, journal = {Doklady Akademii Nauk}, pages = {11--14}, publisher = {mathdoc}, volume = {187}, number = {1}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_187_1_a1/} }
A. M. Vinogradov. A Morse theory of nonmultiple closed curves. Doklady Akademii Nauk, Tome 187 (1969) no. 1, pp. 11-14. http://geodesic.mathdoc.fr/item/DAN_1969_187_1_a1/