@article{DE_1978_14_8_a5,
     author = {V. S. Samovol},
     title = {The equivalence of systems of differential equations with reducing contraction},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1400--1413},
     publisher = {mathdoc},
     volume = {14},
     number = {8},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_8_a5/}
}