%0 Journal Article
%A David F. Findley
%T The Limited Existence Of ...-Derivatives With .....
%J Revista colombiana de matematicas
%D 1988
%P 49-50
%V 22
%N 1-4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RCM_1988__22_1-4_181806/
%F RCM_1988__22_1-4_181806