Retzlaff-Roberts DL (1994). “Reexamining the Normalization Issue in LP Discriminant Analysis.? in Proceedings Decision Sciences Institute. 1994 Annual Meeting, Decision Sci. Inst. 2: 1233-1235.

Retzlaff-Roberts DL (1996). “A Ratio Model for Discriminant Analysis Using Linear Programming.” EJOR 94(1): 112-121.

Retzlaff-Roberts DL (1996). “Relating Discriminant Analysis and Data Envelopment Analysis to One Another.” Computer and Operations Research 23(4): 311-322.

Retzlaff-Roberts DL (1996). “Relating Discriminant-Analysis and Data Envelopment Analysis to One Another.” Computer and Operations Research 23: 311-322.

Retzlaff-Roberts DL (1997). “A Data Envelopment Analysis Approach to Discriminant Analysis.” Ann Oper Res 73: 299-321.

Retzlaff-Roberts DL, CF Chang and RM Rubin (2004). “Technical Efficiency in the Use of Health Care Resources: A Comparison of OECD Countries.” Health Policy 69(1): 55-72.

Retzlaff-Roberts DL and DJ Fine (1995). “Estimating the Hospital-Wide Cost Differentials Warranted for Teaching Hospitals: An Alternative to Regression Approaches.” Medical Care 33(5): 531-552.

Retzlaff-Roberts DL, DJ Fine, SW Loree and S Tsubakitani (1992). “The Trade-Off between Hospital Cost and Quality of Care. An Exploratory Empirical Analysis.” Medical Care 30(8): 677-698.

Retzlaff-Roberts DL and RC Morey (1993). “A Goal-Programming Method of Stochastic Allocative Data Envelopment Analysis.” EJOR 7: 379-397.

Retzlaff-Roberts DL and R Puelz (1996). “Classification in Automobile Insurance Using a DEA and Discriminant Analysis Hybrid.” JPA 7(4): 417-427.