@article{DE_1976_12_12_a8,
     author = {G. S. Osipenko},
     title = {The local dynamical equivalence of differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2193--2200},
     year = {1976},
     volume = {12},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_12_a8/}
}