%0 Journal Article %A N. I. Gurarii %T Some basis theorems in Hilbert space and Banach spaces %J Doklady Akademii Nauk %D 1970 %P 974-977 %V 193 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_193_5_a2/ %G ru %F DAN_1970_193_5_a2