1. F. J. Kayne, “The Enzymes,” 3rd Ed., Vol. VIII, ed. by P. D. Boyer, Academic Press Inc., New York, N. Y., 1973, p. 353.
2. G. Michal and H.O. Beutler, “Methods of Enzymatic Analysis,” 2nd Ed., Vol. 3, ed. by H. U. Bergmeyer, Academic Press Inc., New York, N. Y., 1974, p. 1314.
3. F. Yoshizaki, “Seikagaku Zikken Koza,” Vol. 12, ed. by The Japanese Biochemical Society, Tokyo Kagaku Dozin Co., Ltd., Tokyo, 1976, p. 138.