Roxani Karagiannis

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Productivity and quality changes in Greek public hospitals

Roxani Karagiannis, Kostas Velentzas, 2012, Oper. Res..

Technical and scale efficiency of public hospitals in Greece

Roxani Karagiannis, 2012 .

A system-of-equations two-stage DEA approach for explaining capacity utilization and technical efficiency

Roxani Karagiannis, Roxani Karagiannis, 2015, Ann. Oper. Res..