@article{DAN_1991_319_1_a22,
     author = {I. F. Obraztsov and I. V. Andrianov and B. V. Nerubailo},
     title = {Continual approximation for high-frequency oscillations of a},
     journal = {Doklady Akademii Nauk},
     pages = {111--112},
     publisher = {mathdoc},
     volume = {319},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_319_1_a22/}
}