%0 Journal Article %A F. T. Baranovskii %T Differential properties of the solution of a mixed problem for a strongly degenerate hyperbolic equation %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1964 %P 17-27 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1964_3_a2/ %G ru %F IVM_1964_3_a2