TY  - BOOK
AU  - Sengupta Jati K
TI  - Efficiency analysis by production frontiers: The nonparametric approach
U1  - B28930bX:89A, M9 
PY  - 1989///
CY  - Dordrecht
PB  - Kiuwer Academic        
KW  -  Parameter estimation
KW  - Production function
ER  -