@article{DAN_1961_136_5_a6,
     author = {A. M. Molchanov},
     title = {Subdivision of motions and asymptotic methods in the theory of nonlinear oscillations},
     journal = {Doklady Akademii Nauk},
     pages = {1030--1033},
     publisher = {mathdoc},
     volume = {136},
     number = {5},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_136_5_a6/}
}