@article{01130732,
title = {Proto-derivatives of partial subgradient mappings.},
journal = {Journal of Convex Analysis},
volume = {4},
year = {1997},
pages = {221-234},
zbl = {0897.49013},
language = {en},
url = {http://dml.mathdoc.fr/item/01130732}
}
Poliquin, R.A.; Rockafellar, R.T. Proto-derivatives of partial subgradient mappings.. Journal of Convex Analysis, Tome 4 (1997) pp. 221-234. http://gdmltest.u-ga.fr/item/01130732/