@article{DE_1965_1_3_a9,
     author = {V. P. Rudakov},
     title = {On the existence of an interval of stability of motion according to the first approximation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {357--359},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1965_1_3_a9/}
}