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A variable returns to scale data envelopment analysis model for the joint determination of efficiencies with an example of the UK health service
Tsai, P.F., (2002)
Some mathematical properties of a DEA model for the joint determination of efficiencies
Molinero, C.Mar, (1997)
The Joint Determination of Efficiencies in DEA: An Application to the UK Health Service.
Tsai, P.F., (1998)