TY  - BOOK
AU  - Cellina A ed.
ED  - Centro International Matematico Estivo(1st : 1989 : Varenna)
ED  - 
TI  - Methods of nonconvex analysis: lectures
U1  - 515 
PY  - 1990///
CY  - Berlin
PB  - Springer Verlag
KW  - Analysis
ER  -