@article{DAN_1989_307_4_a15,
     author = {A. Yu. Kolesov and Yu. S. Kolesov},
     title = {The {Bogolyubov{\textendash}Mitropol'skii} reduction principle in the problem of parametric excitation of autowaves},
     journal = {Doklady Akademii Nauk},
     pages = {837--840},
     year = {1989},
     volume = {307},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_4_a15/}
}