%0 Journal Article %A S. V. Zhestkov %A E. A. Ermolaev %T Algebraic approach to the study of stability of Cauchy problem for Fedorov systems of partial differential equations %J Differencialʹnye uravneniâ %D 1993 %P 715-716 %V 29 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_4_a15/ %G ru %F DE_1993_29_4_a15