%0 Journal Article %A V. M. Babich %T A point source of oscillations on the boundary of a region %J Zapiski Nauchnykh Seminarov POMI %D 1976 %P 3-20 %V 62 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1976_62_a0/ %G ru %F ZNSL_1976_62_a0