%0 Journal Article %A H. M. Nadzafov %T The second Cauchy--Goursat problem for an equation of Tricomi type with discontinuous coefficients on a~portion of the boundary of its region %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1967 %P 72-78 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1967_5_a9/ %G ru %F IVM_1967_5_a9