Olesen OB and NC Petersen (1996). “Indicators of Ill-Conditioned Data Sets and Model Misspecification in Data Envelopment Analysis: An Extended Facet Approach.” Management Science 42(2): 205-219.
Olesen OB and NC Petersen (1996). “Indicators of Ill-Conditioned Data Sets and Model Misspecification in Data Envelopment Analysis: An Extended Facet Approach.” Management Science 42(2): 205-219.