@article{DE_1994_30_6_a2,
     author = {V. N. Gorbuzov},
     title = {Autonomy of integrals and integrating factors of systems of ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {939--946},
     publisher = {mathdoc},
     volume = {30},
     number = {6},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_6_a2/}
}