@article{DAN_1966_170_4_a0,
     author = {L. D. Akulenko},
     title = {Multifrequency oscillations and rotations},
     journal = {Doklady Akademii Nauk},
     pages = {751--754},
     year = {1966},
     volume = {170},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_170_4_a0/}
}