1. P. Hevia and W. J. Visek, J. Nutr.109, 32 (1979).
2. K. K. Carroll, Nutr. Rev.36, 1 (1978).
3. N. R. Yadav and I. E. Liener, Nutr. Rep. Int.16, 385 (1977).
4. D. Kritchevsky, S. A. Tepper and J. A. Story, Fedn Proc.37, 747 (1978), abstract.
5. B. Schepartz, Regulation of Amino Acid Metabolism in Mammals. W. B. Saunders Co., London 1973.