%0 Journal Article %A Yu. E. Karpeshina %T Interaction of a free wave with a semicrystall %J Zapiski Nauchnykh Seminarov POMI %D 1990 %P 107-114 %V 186 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1990_186_a9/ %G ru %F ZNSL_1990_186_a9