@article{ZVMMF_1964_4_2_a18,
     author = {V. A. Yaroshevskii},
     title = {Asymptotic solution of the equation of motion of certain conservative systems with slowly varying parameters},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {363--367},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1964_4_2_a18/}
}