%0 Journal Article %A A. Kh. Gelig %T Stability of the solutions of a~mixed problem for a~hyperbolic equation of second order %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1960 %P 104-112 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1960_3_a11/ %G ru %F IVM_1960_3_a11