Ruggiero J (2000). “Nonparametric Estimation of Returns to Scale in the Public Sector with an Application to the Provision of Educational Services.” JORS 51(8): 906-912.

Ruggiero J (2000). “Nonparametric Estimation of Returns to Scale in the Public Sector with an Application to the Provision of Educational Services.” JORS 51(8): 906-912.

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