%0 Journal Article %A V. P. Zaharyuta %T The quasi-equivalence of bases at an infinite center of a Hilbert scale %J Doklady Akademii Nauk %D 1969 %P 26-28 %V 189 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_189_1_a5/ %G ru %F DAN_1969_189_1_a5