1. 1976–1978 Analysis of Motor Carrier Accidents Involving Defects or Mechanical Failure,1979
2. Synthesis of Practice for Out-of-Service Criteria for Commercial Vehicles, Part A; Vehicle Criteria;Bell,1996
3. Sampling of Population, Methods and Applications;Levy,1991
4. Out-of-Service Criteria: Review of National Truck Databases;Massie,1996