%0 Journal Article %A J. Borwein %A J. Vanderwerff %T Differentiability of Conjugate Functions and Perturbed Minimization Principles %J Journal of convex analysis %D 2009 %P 707-711 %V 16 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_2009_16_3_JCA_2009_16_3_a7/ %F JCA_2009_16_3_JCA_2009_16_3_a7