%0 Journal Article %A J. M. Borwein %A Q. J. Zhu %T Limiting Convex Examples for Nonconvex Subdifferential Calculus %J Journal of convex analysis %D 1998 %P 221-236 %V 5 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_1998_5_2_a1/ %F JCA_1998_5_2_a1