TY - JOUR AU - A. V. Zhiber AU - V. V. Sokolov TI - New example of a nonlinear hyperbolic equation possessing integrals JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1999 SP - 20 EP - 26 VL - 120 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1999_120_1_a1/ LA - ru ID - TMF_1999_120_1_a1 ER -