%0 Journal Article %A S. L. Sobolevskii %T Systems of Differential Equations with Nonunique Solutions of the Cauchy Problem %J Differencialʹnye uravneniâ %D 2002 %P 426-427 %V 38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2002_38_3_a22/ %G ru %F DE_2002_38_3_a22