Sengupta, J. K. (1989). Efficiency analysis by production frontiers: The non parametric approach. Kluwer Academic.
Chicago-viite (17. p.)Sengupta, Jati K. Efficiency Analysis by Production Frontiers: The Non Parametric Approach. Dordrecht: Kluwer Academic, 1989.
MLA-viite (9. p.)Sengupta, Jati K. Efficiency Analysis by Production Frontiers: The Non Parametric Approach. Kluwer Academic, 1989.
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