TY - JOUR AU - Kh. G. Bzhikhatlov TI - Quasi-linear equations of mixed type JO - News of the Kabardin-Balkar scientific center of RAS PY - 2008 SP - 134 EP - 141 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IZKAB_2008_6_a0/ LA - ru ID - IZKAB_2008_6_a0 ER -