%0 Journal Article %A М.М. Вайнберг %T Existence theorems for the characteristic values of a class of systems of nonlinear integral equations. %J Matematičeskij sbornik %D 1950 %P 365-394 %V 68 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS_1950__68_3_a4/ %G de %F MS_1950__68_3_a4