Cook WD, K Alex, R Yaakov and MS Lawrence (1991). “A Data Envelopment Approach to Measuring Efficiency: Case Analysis of Highway Maintenance Patrols.” Socio-Econ Plan Sci 20(1): 83-103.

Cook WD, K Alex, R Yaakov and MS Lawrence (1991). “A Data Envelopment Approach to Measuring Efficiency: Case Analysis of Highway Maintenance Patrols.” Socio-Econ Plan Sci 20(1): 83-103.

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