Sengupta JK (1992). “Nonparametric Approach to Dynamic Efficiency – a Nonparametric Application of Cointegration to Production Frontiers.” Appl Econ 2: 153-159.
Sengupta JK (1992). “Nonparametric Approach to Dynamic Efficiency – a Nonparametric Application of Cointegration to Production Frontiers.” Appl Econ 2: 153-159.