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  • 1.
    Kumbhakar, S. C.
    et al.
    Department of Economics, University of Texas at Austin, Austin, TX 78712-1172, United States.
    Heshmati, Almas
    Department of Economics, Goteborg University, Vasagatan 1, S-411 80 Goteborg, Sweden.
    Hjalmarsson, L.
    Department of Economics, Goteborg University, Vasagatan 1, S-411 80 Goteborg, Sweden.
    Temporal patterns of technical efficiency: Results from competing models1997In: International Journal of Industrial Organization, ISSN 0167-7187, E-ISSN 1873-7986, Vol. 15, no 5, p. 597-616Article in journal (Refereed)
    Abstract [en]

    In recent years several models have been proposed to estimate time-varying technical efficiency. These models differ to a great extent in specification and estimation. This paper undertakes a comparison between different specifications proposed in earlier research. The models are used to estimate the technical efficiency of 15 Colombian cement plants observed in the period 1968-1988. The efficiency scores and the time path of efficiency are found to vary substantially across models. ©1997 Elsevier Science B.V.

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