Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1976_12_8_a10, author = {Tran Duc Van}, title = {The problem of conjugation for systems of ordinary differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1462--1469}, publisher = {mathdoc}, volume = {12}, number = {8}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1976_12_8_a10/} }
Tran Duc Van. The problem of conjugation for systems of ordinary differential equations. Differencialʹnye uravneniâ, Tome 12 (1976) no. 8, pp. 1462-1469. http://geodesic.mathdoc.fr/item/DE_1976_12_8_a10/