1. New ways to soften shock;Coppa;Mach Des,1968
2. An assessment of energy absorbing devices for prospective use in aircraft impact situations;Ezra,1972
3. Metallic energy dissipating systems;Johnson;Appl Mech Rev,1978
4. Axially loaded metal tubes as impact energy absorbers;Reid,1986
5. Plastic deformation mechanisms in axially compressed metal tubes used as impact energy absorbers;Reid;Int J Mech Sci,1993