Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1978_14_4_a23, author = {A. E. Rudenok}, title = {The normal form of some differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {747--749}, publisher = {mathdoc}, volume = {14}, number = {4}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1978_14_4_a23/} }
A. E. Rudenok. The normal form of some differential equations. Differencialʹnye uravneniâ, Tome 14 (1978) no. 4, pp. 747-749. http://geodesic.mathdoc.fr/item/DE_1978_14_4_a23/