1. Hemingway, R.W.; Karchesy, J.J. (eds.) Chemistry and significance of condensed tannins. Plenum Press, New York, 553 p. (1989).
2. Shuttleworth, S.G.; Cunningham, G.E. The theory of vegetable tannage. J. Soc. Leather Trades’ Chem. 32:183 (1948).
3. Roux, D.G. Study of the affinity of black wattle extract constituents. Part 1. Affinity of polyphenols for swollen collagen and cellulose in water. J. Soc. Leather Trades’ Chem. 39:80 (1955).
4. Sykes, R.L.; Roux, D.G. Study of the affinity of black wattle extract constituents. Part 4. Relative affinity of polyphenols for swollen chemically modified collagen. J. Soc. Leather Trades’ Chem. 41:14 (1957).
5. Ray, N.H. Measurement of high molecular weights by ebulliometry. Trans. Faraday Soc. 48:809 (1952).