TY - JOUR AU - A. A. Lokshin TI - Propagation of perturbations from a~point source described by a~quasihyperbolic equation JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1976 VL - 31 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1976_31_5_a27/ LA - ru ID - RM_1976_31_5_a27 ER -