1. Auxetic materials;Alderson;Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering,2007
2. Fashion and function—Factors affecting the design and use of protective clothing;Black,2005
3. Industrial bump caps;BS EN 812,1998
4. Specification for head protectors for cricketers;BS 7928,1998
5. Protective clothing for professional motorcycle riders. Jackets, trousers and one piece or divided suits, Parts 1–4;BS EN 13595,2002