@article{IVM_1959_6_a20,
     author = {V. A. Tabueva},
     title = {Successive approximations of {Tricomi} for finding a~solution of the differential equation $\ddot x=f(x,\,\dot x)$ periodic in~$x$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {169--173},
     publisher = {mathdoc},
     number = {6},
     year = {1959},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1959_6_a20/}
}