TY  - JOUR
AU  - Ivanov, Milen
AU  - Zlateva, Nadia
TI  - Abstract Subdifferential Calculus and Semi-Convex Functions
JO  - Serdica Mathematical Journal
PY  - 1997
SP  - 35
EP  - 58
VL  - 23
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SMJ2_1997_23_1_a3/
LA  - en
ID  - SMJ2_1997_23_1_a3
ER  -