Tsai PF and C Mar Molinero (2002). “A Variable Returns to Scale Data Envelopment Analysis Model for the Joint Determination of Efficiencies with an Example of the UK Health Service.” EJOR 141(1): 21-38.
Tsai PF and C Mar Molinero (2002). “A Variable Returns to Scale Data Envelopment Analysis Model for the Joint Determination of Efficiencies with an Example of the UK Health Service.” EJOR 141(1): 21-38.