Sengupta JK and RE Sfeir (1988). “Efficiency Measurement by Data Envelopment Analysis with Econometric Applications.” Appl Econ 2: 285-293.
Sengupta JK and RE Sfeir (1988). “Efficiency Measurement by Data Envelopment Analysis with Econometric Applications.” Appl Econ 2: 285-293.