TY - JOUR AU - A. A. Davydov AU - Yu. A. Kasten TI - On Structural Stability of Characteristic Nets and the Cauchy Problem for a Tricomi--Cibrario Type Equation JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2019 SP - 159 EP - 166 VL - 304 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_2019_304_a9/ LA - ru ID - TM_2019_304_a9 ER -