TY - JOUR AU - A. N. Zarubin TI - Tricomi problem for nonlinear equation of mixed type with functional retarding, advancing and concentrated deviation JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2017 SP - 20 EP - 29 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2017_11_a2/ LA - ru ID - IVM_2017_11_a2 ER -