@article{IVM_1959_6_a9,
     author = {Yu. A. Klokov},
     title = {A~limiting boundary value problem for the equation $\ddot x+\dot xf(x,\dot x)+\phi(x)=0$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {72--80},
     publisher = {mathdoc},
     number = {6},
     year = {1959},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1959_6_a9/}
}