TY - JOUR AU - V. Ya. Ivriǐ TI - Wave fronts of solutions of certain hyperbolic pseudodifferential equations JO - Trudy Moskovskogo matematičeskogo obŝestva PY - 1979 SP - 83 EP - 112 VL - 39 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MMO_1979_39_a2/ LA - ru ID - MMO_1979_39_a2 ER -