@article{DAN_1964_157_6_a11,
     author = {S. A. Kharlamov},
     title = {An example of a heteroparametric perturbation of a pendulum by quasi-periodic oscillations of the suspension},
     journal = {Doklady Akademii Nauk},
     pages = {1311--1313},
     publisher = {mathdoc},
     volume = {157},
     number = {6},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_6_a11/}
}