TY  - GEN
AU  - Rockafellar, Tyrrell R
AU  - Wets, Roger J - B
TI  - Variational analysis
SN  - 3540627723
PY  - 1998///
CY  - Berlin
PB  - Springer
KW  - Convex sets and functions
KW  - Subdifferential calculus
ER  -