%0 Journal Article %A A. Lyashenko %T The first boundary value problem for the vibrating string equation in domains with piecewise smooth boundary %J Banach Center Publications %D 1992 %P 317-321 %V 27 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/-27-2-317-321/ %R 10.4064/-27-2-317-321 %G en %F 10_4064__27_2_317_321