%0 Journal Article %A B. E. Veits %T Smoothness criteria for a~Banach space to be convertible into a~Hilbert space %J Matematičeskie zametki %D 1971 %P 385-390 %V 9 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1971_9_4_a2/ %G ru %F MZM_1971_9_4_a2