1. 5) Yu, L., Devay, G. E., Lai, G. H., Simmons, C. T., and Neilson, S. R., U.S. Patent 6248373 (June 19, 2001).
2. 14) Arnaud, C. D., and Sanchez, S. D., Calcium and phosphorus. In “Present Knowledge in Nutrition” 7th edition, eds. Ziegler, E. E., and Filer, L. J., Jr., ILSL Press, Washington DC, pp. 245–255 (1996).
3. 15) Brody, T., Inorganic nutrients. In “Nutrition Biochemistry” 2nd edition, Academic Press, San Diego, pp. 761–794 (1999).
4. 27) Cousin, R. J., Zinc. In “Present Knowledge in Nutrition” 7th edition, eds. Ziegler, E. E., and Filer, L. J., Jr., ILSL Press, Washington DC, pp. 293–306 (1996).