%0 Journal Article %A L. B. Zelenko %T Discreteness conditions for the spectrum of the Sturm-Liouville operator in a space of vector functions %J Matematičeskie zametki %D 1967 %P 583-588 %V 1 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1967_1_5_a10/ %G ru %F MZM_1967_1_5_a10