%0 Journal Article %A Ya. I. Zhitomirskii %T Uniqueness classes for solutions of the Cauchy problem for linear %J Izvestiya. Mathematics %D 1967 %P 1109-1129 %V 1 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1967_1_5_a11/ %G en %F IM2_1967_1_5_a11