1. National Society to Prevent Blindness. Vision Problems in the US; Data Analysis: Definitions, Data Sources, Detailed Data Tables, Analysis, Interpretation,1980
2. An approach to the prevention of blindness in diabetes;Herman;Diabetes Care,1983
3. Report 7. A modification of the Airlie House classification of diabetic retinopathy;Invest Ophthalmol Vis Sci,1981
4. Early Treatment Diabetic Retinopathy Study. Manual of Operations. Baltimore: ETDRS Coordinating Center, Department of Epidemiology and Preventive Medicine, University of Maryland School of Medicine, 1980; Chapter 18.
5. WISAR; Wisconsin Storage and Retrieval System;Harberg,1979