%0 Journal Article %A S. Ashirov %A Ya. D. Mamedov %T Investigation of solutions of nonlinear Volterra--Fredholm operator equations %J Doklady Akademii Nauk %D 1976 %P 265-268 %V 229 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1976_229_2_a0/ %G ru %F DAN_1976_229_2_a0