%0 Journal Article %A V. I. Zhegalov %T A boundary-value problem for an equation of mixed type with boundary conditions on both characteristics and with discontinuities on the transition curve %J Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki %D 1962 %P 3-16 %V 122 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZKU_1962_122_3_a0/ %G ru %F UZKU_1962_122_3_a0