%0 Journal Article %A R. Mifflin %A C. Sagastizabal %T Relating U-Lagrangians to Second-Order Epi-Derivatives and Proximal Tracks %J Journal of convex analysis %D 2005 %P 81-93 %V 12 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_2005_12_1_JCA_2005_12_1_a4/ %F JCA_2005_12_1_JCA_2005_12_1_a4