%0 Journal Article
%A R.M. Dudley
%T On second derivates of convex functions.
%J Mathematica Scandinavica
%D 1977
%P 159-174
%V 41
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1977__41_166549/
%F MS2_1977__41_166549