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@article{DAN_1965_160_6_a9, author = {Yu. I. Neimark and L. P. Shilnikov}, title = {A condition for the generation of periodic motions}, journal = {Doklady Akademii Nauk}, pages = {1261--1264}, publisher = {mathdoc}, volume = {160}, number = {6}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_160_6_a9/} }
Yu. I. Neimark; L. P. Shilnikov. A condition for the generation of periodic motions. Doklady Akademii Nauk, Tome 160 (1965) no. 6, pp. 1261-1264. http://geodesic.mathdoc.fr/item/DAN_1965_160_6_a9/