1. Glark, K.S. NAIRS I, Recorder's Handbook, 1975-1976 Pennsylvania State University, University Park, PA, 1975
2. Estimating risk and inferring casuality in epidemiology Epidemiology and Health Risk Assessment;Gordis, L.;J Sports Med; Accident investigation and reporting Sports Safety,1988
3. The epidemiology of injuries in typical Scandinavian team sports Br I;Jorgensen, U.;Sports Med
4. The epidemiology of injuries in ice hockey Br I;Jorgensen, U.; Schmidt-Olsen, S.;Sports Med,1986
5. Injuries in high school sports Pediatrics;Garrick, J.G.; Requa, R.K.,1978