%0 Journal Article %A P. P. Zabreiko %A Ya. V. Radyno %T Applications of fixed-point theory to the Cauchy problem for equations with degrading operators %J Differencialʹnye uravneniâ %D 1987 %P 345-348 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1987_23_2_a20/ %G ru %F DE_1987_23_2_a20