%0 Journal Article %A S. N. Samborskii %T The Cauchy problem for involutive systems of partial differential equations %J Differencialʹnye uravneniâ %D 1980 %P 516-521 %V 16 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_3_a15/ %G ru %F DE_1980_16_3_a15