%0 Journal Article %A S. T. Chorieva %T The Bitsadze--Samarskii problem with the Frankl condition on the degeneration line for a~mixed-type equation with singular coefficient %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2013 %P 51-60 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2013_5_a4/ %G ru %F IVM_2013_5_a4