1. Traffic safety facts 2001: overview;National Highway Traffic Safety Administration,2001
2. Working to Prevent and Control Injury in the United States: Fact Book for the Year 2000;National Center for Injury Prevention and Control,2000
3. Traffic safety facts 2001: occupant protection;National Highway Traffic Safety Administration,2001
4. Fatality reduction by safety belts for front-seat occupants of cars and light trucks;Kahane,2000