TY - JOUR AU - S. T. Chorieva TI - The Bitsadze--Samarskii problem with the Frankl condition on the degeneration line for a~mixed-type equation with singular coefficient JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2013 SP - 51 EP - 60 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2013_5_a4/ LA - ru ID - IVM_2013_5_a4 ER -