TY - JOUR AU - R. S. Phillips TI - Dissipative operators and hyperbolic systems of partial differential equations JO - Matematika PY - 1962 SP - 11 EP - 70 VL - 6 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAT_1962_6_4_a1/ LA - ru ID - MAT_1962_6_4_a1 ER -