1. Department of Transportation, National Highway Traffic Safety Administration. Emergency Medical Services Agenda for the Future Implementation Guide. Washington, DC: NHTSA, May 1998.
2. Department of Health and Human Services; Office of Inspector General. Medicare Ambulance Payment. 0E1-05-95-00300. Bethesda, MD: DHFIS, Nov 1997.
3. Performance of a system to determine EMS dispatch priorities