@article{DAN_1975_223_6_a14,
     author = {A. D. Morozov and L. P. Shilnikov},
     title = {On the mathematical theory of synchronization of oscillations},
     journal = {Doklady Akademii Nauk},
     pages = {1340--1343},
     publisher = {mathdoc},
     volume = {223},
     number = {6},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_223_6_a14/}
}