%0 Journal Article
%A Tita, N.
%T $E_{\phi ,\varphi }$ operators between normed spaces
%J Portugaliae mathematica
%D 1978
%P 255-258
%V 37
%N 3-4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1978__37_3-4_115356/
%G en
%F PORMA_1978__37_3-4_115356