%0 Journal Article %A Ho Duc Viet %T Remarks on subdifferentials of convex functionals %J Commentationes Mathematicae Universitatis Carolinae %D 1975 %P 641-661 %V 16 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1975__16_4_a3/ %G en %F CMUC_1975__16_4_a3