%0 Journal Article %A I. Yu. Popov %T Integral equations in a~model of apertures of zero width %J Algebra i analiz %D 1990 %P 189-196 %V 2 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_1990_2_5_a7/ %G ru %F AA_1990_2_5_a7