1. Baker, J. R. (1958).Principles of Biological Microtechnique. London Methuen.
2. Berendsen, H. J. C. (1962). Nuclear magnetic resonance study of collagen hydration.J. Chem. Phys. 36, 3297?305.
3. Craik, J. E. &McNeil, I. R. R. (1965). Histological studies on stressed skin. In:Biomechanics and Related Bioengineering Topics (ed. R. M. Kenedi), pp. 159?64. Oxford: Pergamon Press.
4. Elden, H. R. (1971). Biophysical analysis of aging skin. In:Biophysical Properties of the Skin (ed. H. R. Elden), pp. 1?62. New York, London, Sydney, Toronto: Interscience.
5. Flint, M. H. (1972). The interrelationships of mucopolysaccharide and collagen in connective tissue remodelling.J. Embryol. exp. Morph. 27, 481?95.