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Drivers of regional efficiency differentials in Italy: technical inefficiency or allocative distortions?
Erbetta, Fabrizio, (2008)
Regulatory and Environmental Effects on Public Transit Efficiency. A Mixed DEA-SFA Approach
Margari, Beniamina Buzzo, (2006)
Regulatory and environmental effects on public transit efficiency: a mixed DEA-SFA approach
Margari, Beniamina, (2007)