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2. O. Wieland and I. Witt, “Methods in Enzymatic Analysis, 2nd Ed.” Vol. 3, ed. H. U. Bergmeyer, Academic Press, New York, pp. 1442~1445 (1974).
3. E. Racker, “Methods in Enzymatic Analysis,” 2nd Ed., Vol. 3, ed. H. U. Bergmeyer, Academic Press, New York, pp. 1439~1441 (1974).