@article{DE_1975_11_7_a8,
     author = {V. I. Mironenko},
     title = {Differential systems that are equivalent with respect to imbeddability},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1225--1231},
     year = {1975},
     volume = {11},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_7_a8/}
}