1. Enzymes [Russian translation], A. E. Braunstein (editor), Nauka, Moscow (1964).
2. D. E. Metzler, J. B. Longenedur, and E. E. Snell, J. Am. Chem. Soc.,75, 2786 (1953);76, 639 (1954).
3. D. E. Metzler, M. Ikawa, and E. E. Snell, J. Am. Chem. Soc.,76, 648 (1954).
4. E. E. Snell, P. M. Fasella, A. Braunstein, and A. Rossi Fanelli, in: Chemical and Biological Aspects of Pyridoxal Catalysis, Pergamon Press (1963), p. 1.
5. A. E. Martell and I. Matsusima, in: Chemical and Biological Aspects of Pyridoxal Catalysis [Russian translation], Nauka, Moscow (1968), pp. 26?37.