1. Chandler S, Gilchrist A, Mills NJ. Motorcycle helmet load spreading performance for impacts into rigid and deformable objects, IRCOBI Biomechanics of Impacts conference, Berlin, 1991, p. 249–61.
2. The deterioration of thermoplastic motorcycle helmet shells after outdoor exposure;Denning;Plast Rubber Compos Process Appl,1992
3. Effect of polystyrene foam liner density on motorcycle helmet shock absorption;Gale;Plast Rubber Process Appl,1985
4. The effectiveness of foams in bicycle and motorcycle helmets;Mills;Accident Anl Prev,1991
5. Survey of head, helmet and headform sizes related to motorcycle helmet design;Gilchrist;Ergonomics,1988