%0 Journal Article %A I. Yu. Chudinovich %T Boundary equations in nonstationary diffraction problems for elastic waves on three-dimensional cracks %J Matematičeskie zametki %D 1992 %P 119-123 %V 51 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1992_51_4_a15/ %G ru %F MZM_1992_51_4_a15