1. J. R. Williamson, “Methods of Enzymatic Analysis,” Vol. Ill, ed. by H. U. Bergmeyer, Academic Press Inc., New York and London, 1974, p. 1616.
2. C. B. Anfinsen, “Methods in Enzymology,” Vol. I, ed. by S. P. Colowick and N. O. Kaplan, Academic Press Inc., New York, 1955, p. 695.