%0 Journal Article %A I. Yu. Chudinovich %T On the solution by the Galerkin method of boundary equations in problems of nonstationary diffraction of elastic waves by three-dimensional cracks %J Differencialʹnye uravneniâ %D 1993 %P 1648-1651 %V 29 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_9_a19/ %G ru %F DE_1993_29_9_a19