1. M. Sugano, “Animals and Vegetable Proteins in Lipid Metabolism and Atherosclerosis, ” ed. by M. J. Gibney and D. Kritchevsky, Alan R. Liss Inc., New York, 1983, p. 51.
2. G. W. Snedecor and W. G. Cochran, “Statistical Method,” 6th Ed., Iowa State University Press, Ames, IA, 1967, p. 258.