@article{IVM_1969_5_a13,
     author = {G. O. Yaroshevich},
     title = {A~method of successive approximations for periodic solutions of differential equations of nonlinear vibrations},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {114--125},
     publisher = {mathdoc},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1969_5_a13/}
}