%0 Journal Article %A Yu. G. Smirnov %T On the Fredholm property of a system of pseudodifferential equations in the problem of diffraction by a bounded screen %J Differencialʹnye uravneniâ %D 1992 %P 136-143 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_1_a15/ %G ru %F DE_1992_28_1_a15