1. Accident Facts, National Safety Council, Chicago, Illinois, Annual Editions.
2. Application of the ORI Cost-Effectiveness System to Arizona, New Jersey, North Carolina, and Utah,1970
3. The Highway Risk Problem;Baker,1971
4. Cumulative Regulatory Effects on the Cost of Automotive Transportation (RECAT),1972
5. Evaluation of Costs and Effectiveness of Major Federal—Aid Highway Programs,1970