%0 Journal Article
%A E. El Haddad
%A R. Deville
%T The Viscosity Subdifferential of the Sum of Two Functions in Banach Spaces. I: First Order Case
%J Journal of convex analysis
%D 1996
%P 295-308
%V 3
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JCA_1996_3_2_a8/
%F JCA_1996_3_2_a8