Cuesta, Rafael A.; Knox, C.A.; Zofío, José Luis - Departamento de Análisis Económico: Teoría … - 2007
We use a flexible parametric hyperbolic distance function to estimate environmental efficiency when some outputs are undesirable. Cuesta and Zofio (J. Prod. Analysis (2005), 31-48) introduced this distance function specification in conventional input-output space to estimate technical efficiency...