%0 Journal Article %A I. V. Shragin %T Existence theorems for two classes of nonlinear integral equations %J Differencialʹnye uravneniâ %D 1975 %P 1843-1852 %V 11 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_10_a15/ %G ru %F DE_1975_11_10_a15