%0 Journal Article %A A. Kh. Gelig %T Stability of the solutions of the Cauchy problem for symmetric systems of partial differential equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1960 %P 69-83 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1960_1_a8/ %G ru %F IVM_1960_1_a8