%0 Journal Article %A A. A. Zlotnik %T A projection-difference scheme for the vibrating-string equation %J Doklady Akademii Nauk %D 1979 %P 292-295 %V 245 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_245_2_a3/ %G ru %F DAN_1979_245_2_a3