%0 Journal Article %A N. S. Grigor'ev %T Diffraction of short waves by a segment %J Zapiski Nauchnykh Seminarov POMI %D 1978 %P 60-89 %V 78 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1978_78_a4/ %G ru %F ZNSL_1978_78_a4