Outlier Detection in DEA
A Unified Model for Detecting Efficient and Inefficient Outliers in Data Envelopment Analysis
Chen, W-C. and A.L. Johnson, 2010. Computers and Operations Research 37 (2): 417-425.
The Hyperbolic Oriented Efficiency Measure as a Remedy to Infeasibility of Super Efficiency Models
Johnson, A.L. and L. F. McGinnis,2009. Journal of the Operational Research Society 60(11): 1511-1517.