%0 Journal Article %A G. M. Magomedov %T An investigation of certain singular integral operators and the corresponding nonlinear equations %J Doklady Akademii Nauk %D 1970 %P 1234-1237 %V 193 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_193_6_a5/ %G ru %F DAN_1970_193_6_a5