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@article{IVM_1970_3_a9, author = {V. S. Nustrov}, title = {The periodic solutions of systems that are close to nonlinear systems in the case of principal resonance}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {63--69}, publisher = {mathdoc}, number = {3}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1970_3_a9/} }
TY - JOUR AU - V. S. Nustrov TI - The periodic solutions of systems that are close to nonlinear systems in the case of principal resonance JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1970 SP - 63 EP - 69 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1970_3_a9/ LA - ru ID - IVM_1970_3_a9 ER -
V. S. Nustrov. The periodic solutions of systems that are close to nonlinear systems in the case of principal resonance. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1970), pp. 63-69. http://geodesic.mathdoc.fr/item/IVM_1970_3_a9/