%0 Journal Article %A V. B. Poruchikov %T Exact solutions of three-dimensional problems of the diffraction of plane elastic waves by a wedge %J Doklady Akademii Nauk %D 1981 %P 823-826 %V 258 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_258_4_a12/ %G ru %F DAN_1981_258_4_a12