TY - JOUR AU - M. Mirsaburov AU - Zh. Khudzhaev TI - A problem with Tricomi and Frankl conditions on the characteristic for a~class of mixed-type equations JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2013 SP - 41 EP - 50 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2013_1_a3/ LA - ru ID - IVM_2013_1_a3 ER -