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.

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