%0 Journal Article
%A Jaime Lesmes
%T On the approximation of continuosly diffentialble functions in  Hilbert spaces
%J Revista colombiana de matematicas
%D 1974
%P 217-224
%V 8
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RCM_1974__8_181626/
%F RCM_1974__8_181626