1) P. D. Boyer, J. Am. Chem. Soc., 76, 4331 (1954).
2) J. D. Gregory, J. Am. Chem. Soc., 77, 105 (1955).
3) G. L. Ellman, Arch. Biochem. Bioplrys., 82, 70 (1959).
4) M. Koivusalo and L. Uotila, Anal. Biochem., 59, 34 (1974).
5) J. W. Patterson and A. Lazarow, “Methods of Biochemical Analysis,” Vol. II, ed. by D. Glick, Interscience Publishers, Inc., New York, 1955, pp. 259, 276.