TY - JOUR AU - Yu. K. Sabitova TI - Dirichlet problem for mixed type equation with characteristic degeneration JO - Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences PY - 2019 SP - 622 EP - 645 VL - 23 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VSGTU_2019_23_4_a1/ LA - ru ID - VSGTU_2019_23_4_a1 ER -