1. L. J. Gibson and M. F. Ashby, ?Cellular solids: structure and properties? (Pergamon Press, Oxford, 1988).
2. G. S. Mustin, ?Theory and practice of cushion design? (US Government Printing Office, Washington, DC, 1968).
3. N. C. Hilyard (editor) ?Mechanics of cellular plastics? (Applied Science Publishers, London, 1982).
4. R. R. Cousins, J. Appl. Polymer Sci. 20 (1976) 2893.
5. NPL Report DMA 237;R. R. Cousins,1976