TY  - JOUR
AU  - C. Nour
AU  - R. J. Stern
AU  - J. Takche
TI  - Proximal Smoothness and the Exterior Sphere Condition
JO  - Journal of convex analysis
PY  - 2009
SP  - 501
EP  - 514
VL  - 16
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JCA_2009_16_2_JCA_2009_16_2_a10/
ID  - JCA_2009_16_2_JCA_2009_16_2_a10
ER  -