%0 Journal Article %A S. V. Zhestkov %A P. P. Zabreiko %T On the Fixed Point Principle for Matrix Partial Differential Systems of Fedorov--Riccati Type %J Differencialʹnye uravneniâ %D 2004 %P 840-843 %V 40 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2004_40_6_a13/ %G ru %F DE_2004_40_6_a13