Bougnol ML, JH Dula, D Retzlaff-Roberts and NK Womer (2005). “Nonparametric Frontier Analysis with Multiple Constituencies.” JORS 56(3): 252-266.

Bougnol ML, JH Dula, D Retzlaff-Roberts and NK Womer (2005). “Nonparametric Frontier Analysis with Multiple Constituencies.” JORS 56(3): 252-266.

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