TY  - BOOK
AU  - Rockafeller, R. Tyrrell
TI  - The theory of subgradients and its applications to problems of optimization, convex and non-convex functions
T2  - Research and education in Mathematics
U1  - 519.91 
PY  - 1981///
CY  - Berlin
PB  - Haldermann-Verlag
ER  -