1. Burgess, J. F., Jr. (1990), “A Practical Solution to the Efficient Subset Problem in Input Efficiency Measurement,” working paper, VA Management Science Group, Bedford, MA.
2. McIver, J. P., and E. G. Carmines (1981), “Unidimensional Scaling,” Sage University Paper series on Quantitative Applications in the Social Sciences, 07–001. Beverly Hills: Sage Publications.
3. US Department of Veterans Affairs (1993), “Comparison of the Operating Costs and Performance of VA and Nonfederal Hospitals: 1984–1992,” Management Science Group Research Report.