1. H. Tabor and A. Mehler, “Methods in Enzymology,” Vol. II, ed. by S. P. Colowick and N. O. Kaplan, Academic Press, New York, 1950, p. 228.
2. Q. R. Rogers and A. E. Harper, “Protein Nutrition and Free Amino Acid Patterns,” ed. by J. H. Leathern, Rutgers University Press, New Jersey, 1968, p. 107.
3. M. Yoshida, “Design of Experiments of Animal Husbandry,” Yokendo Co., Tokyo, 1975, p. 84.
4. R. M. Leverton, “Protein and Amino Acids Nutrition,” ed. by A. A. Albanese, Academic Press, New York and London, 1959, p. 477.