@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/