1. Knapp F 1919J. Am. Leather Chem. Assoc.
16 658
2. Wilson J A 1941Modern practice of leather manufacture (New York: Reinhold)
3. Sigel H 1976Metal ions in biological systems (New York: Marcel Dekker) vol. 3
4. Kastelic J and Baer E 1980 InMechanical properties of biological tissues (eds) J F V Vincent and J D Currey (Cambridge: University Press) pp. 397–435
5. Lecroisey A and Keil B 1979Biochem. J.
179 53