%0 Journal Article %A V. L. Levin %T Non-degenerate spectra of locally convex spaces %J Doklady Akademii Nauk %D 1960 %P 12-15 %V 135 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_135_1_a1/ %G ru %F DAN_1960_135_1_a1