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@article{JCA_1995_2_1-2_a7, author = {F. H. Clarke and R. J. Stern and P. R. Wolenski}, title = {Proximal {Smoothness} and the {Lower-C\protect\textsuperscript{2}} {Property}}, journal = {Journal of convex analysis}, pages = {117--144}, publisher = {mathdoc}, volume = {2}, number = {1-2}, year = {1995}, url = {http://geodesic.mathdoc.fr/item/JCA_1995_2_1-2_a7/} }
F. H. Clarke; R. J. Stern; P. R. Wolenski. Proximal Smoothness and the Lower-C2 Property. Journal of convex analysis, Tome 2 (1995) no. 1-2, pp. 117-144. http://geodesic.mathdoc.fr/item/JCA_1995_2_1-2_a7/