1. Restraint system usage in the traffic population 1988 annual report;Bowman,1989
2. Restraint system use in 19 U.S. cities 1989 annual report;Datta,1990
3. Idea sampler: belts and bags — a winning combination;National Highway Traffic Safety Administration,1990
4. Usage patterns and misuse rates of automatic seat belts by system type;Reinfurt;Paper presented at American Association for Automotive Medicine 34th Annual Conference, Scottsdale, AZ,1990
5. Direct observation of safety belt use in Michigan: Spring 1990;Streff,1990