%0 Journal Article %A Yu. K. Sabitova %T The first boundary problem with an integral condition for a mixed-type equation with a characteristic degeneration %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2020 %P 46-64 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2020_11_a3/ %G ru %F IVM_2020_11_a3