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Slacks and congestion: response to a comment by R. Färe and S. Grosskopf
Cooper, W.W., (2001)
Infeasibility of Super-Efficiency Data Envelopment Analysis Models
Seiford, L.M., (1999)
Some models and measures for evaluating performances with DEA: past accomplishments and future prospects
Cooper, W.W., (2007)