%0 Journal Article %A J. Laiterer %T Criteria for normal solvability of systems of singular integral equations and Wiener--Hopf equations %J Sbornik. Mathematics %D 1970 %P 387-403 %V 12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1970_12_3_a3/ %G en %F SM_1970_12_3_a3