%0 Journal Article %A A. V. Zhiber %A V. V. Sokolov %T New example of a nonlinear hyperbolic equation possessing integrals %J Teoretičeskaâ i matematičeskaâ fizika %D 1999 %P 20-26 %V 120 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1999_120_1_a1/ %G ru %F TMF_1999_120_1_a1