%0 Journal Article %A O. M. Dzhokhadze %T A~Darboux-type problem in the trihedral angle for a~third-order equation of hyperbolic type %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1999 %P 22-30 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1999_3_a2/ %G ru %F IVM_1999_3_a2