Darold Barnum, John Gleason [Creighton University], Matt Karlaftis [Engineering, National Technical University of Athens], Glen Schumock [UIC Pharmacy], Karen Shields [Sisters of St. Francis Health Services], Sonali Tandon [Chicago Transit Authority] and Surrey Walton [UIC Pharmacy] (2012) Estimating DEA Confidence Intervals with Statistical Panel Data Analysis. Journal of Applied Statistics.
Barnum, D., Walton, S., Shields, K., Schumock, G. T. (2011). Measuring Hospital Efficiency with Data Envelopment Analysis: Nonsubstitutable vs. Substitutable Inputs and Outputs. Journal of Medical Systems. DOI: 10.1007/s10916-009-9416-0
Barnum, D., Shields, K. L., Walton, S. M., Schumock, G. T. (2011). Improving the efficiency of distributive and clinical services in hospital pharmacy with DEA. Journal of Medical Systems. Volume 35, Number 1, Pages 59-70
Schumock, G. T., Shields, K. L., Walton, S. M., Barnum, D. (2009). Data envelopment analysis - A method for comparing hospital pharmacy productivity. Am J Health-Syst Pharm. Vol. 66 Issue 18, p1660-1665