TY - JOUR AU - T. V. Chekmarev TI - The solution of a~system of differential equations of mixed type in the region of hyperbolicity JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1967 SP - 108 EP - 119 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1967_5_a13/ LA - ru ID - IVM_1967_5_a13 ER -