1. B. L. Vallee, inAdvances in Protein Chemistry (Eds.M. L. Anson, K. Bailey andJ. T. Edsall; Academic Press, New York 1955), vol. 10, p. 317.
2. B. L. Vallee, inThe Enzymes, 2nd edn., (Eds.P. D. Boyer, H. Lardy andK. Myrbäck; Academic Press, New York 1960), vol. 3, part B, p. 225.
3. B. L. Vallee andJ. E. Coleman, inComprehensive Biochemistry (Eds.M. Florkin andE. H. Stotz; Elsevier, Amsterdam 1964), vol. 12, p. 165.
4. B. G. Malmström andA. Rosenberg, inAdvances in Enzymology (Ed.F. F. Nord; Interscience, New York 1959), vol. 21, p. 131.
5. H. V. Wyatt, J. theor. Biol.6, 441 (1964).