%0 Journal Article %A Tran Duc Van %T The problem of conjugation for systems of ordinary differential equations %J Differencialʹnye uravneniâ %D 1976 %P 1462-1469 %V 12 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1976_12_8_a10/ %G ru %F DE_1976_12_8_a10