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Separability and substitutability of inputs in the production of police services and their implications for budgeting
Hayashi, Paul M., (1983)
Efficiency estimation with heteroscedasticity in a panel data model
Kumbhakar, Subal, (1997)
Inferring technological parameters from incomplete panel data
Dionne, Georges, (1995)
Police compensation in the United States : an empirical assessment
Hayashi, Paul M., (1986)