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@article{IVM_1967_8_a3, author = {V. V. Misak}, title = {Periodic oscillations of quasi-linear non-autonomous systems with retardation}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {36--40}, publisher = {mathdoc}, number = {8}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1967_8_a3/} }
V. V. Misak. Periodic oscillations of quasi-linear non-autonomous systems with retardation. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1967), pp. 36-40. http://geodesic.mathdoc.fr/item/IVM_1967_8_a3/