TY  - BOOK
AU  - Schaible Siegfried Ed.
AU  -  Ziemba William T Ed.
TI  - Generalized conceavity in optimization and economi
T2  - N A T O Advance study institute proccedings
U1  - X:(B7:3), M1 
PY  - 1981///
CY  - New York
PB  - Academic UNS A      
KW  - Operations Rersearch Economics
ER  -