TY - JOUR AU - A. I. Vahabov TI - Conditions for the well-posedness of two-dimensional mixed problems for hyperbolic systems JO - Differencialʹnye uravneniâ PY - 1991 SP - 531 EP - 533 VL - 27 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1991_27_3_a19/ LA - ru ID - DE_1991_27_3_a19 ER -