References
- Gallagher N. D., Mason R., Toley K. E. Gastroenterology (1973); 64: 438
- Snedecor G. W., Cochran W. G. “Statistical Methods,” 6th Ed. The Iowa State University Press, Ames, Iowa 1967
- Warner R. G. Nutrient Requirements in the Rat. (1966), NAS/NRC Publication 990