1. The highway code. Revised edition;Department of Transport,1987
2. Children and car seats;Shelnness, A.; Charles, S.;Pediatrics,1986
3. Death and injury to children in cars in Britain;Avery, J.G.; Hayes, H.R.M.;Br Med J,1985
4. Observed child restraint use in automobiles;Williams, A.F.;Am J Dis Clhild,1976
5. Injuries of the spine;Bedbrook, G.,1982