TY - JOUR AU - V. Ya. Ivrii TI - Well-posedness in projective Gevrey classes of the Cauchy problem for nonstrictly hyperbolic operators JO - Doklady Akademii Nauk PY - 1975 SP - 26 EP - 28 VL - 222 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1975_222_1_a4/ LA - ru ID - DAN_1975_222_1_a4 ER -