Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1983_19_11_a7, author = {V. L. Rabtsevich}, title = {Reducibility of formal differential systems}, journal = {Differencialʹnye uravneni\^a}, pages = {1884--1889}, publisher = {mathdoc}, volume = {19}, number = {11}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_11_a7/} }
V. L. Rabtsevich. Reducibility of formal differential systems. Differencialʹnye uravneniâ, Tome 19 (1983) no. 11, pp. 1884-1889. http://geodesic.mathdoc.fr/item/DE_1983_19_11_a7/