@article{01130743, title = {Geometric approximation on proximal normals.}, journal = {Journal of Convex Analysis}, volume = {4}, year = {1997}, pages = {373-379}, zbl = {0908.49016}, language = {en}, url = {http://dml.mathdoc.fr/item/01130743} }
Radulescu, M.L.; Clarke, F.H. Geometric approximation on proximal normals.. Journal of Convex Analysis, Tome 4 (1997) pp. 373-379. http://gdmltest.u-ga.fr/item/01130743/