1. Briggs J, Finch P, Matulewicz MC, Weigel H, 1981, Complexes of copper (II), calcium, and other metal ions with carbohydrates: Thin-layer ligand-exchange chromatography and determination of relative stabilities of complexes. Carbohydrate Research. 97:181-188.

2. Karlowski TR, Chalmers TC, Frenkel LD, et al. 1975. Ascorbic acid for the common cold: A prophylactic and therapeutic trial. Journal of the American Medical Association. 231:1038-1042.

3. Pauling L. Vitamin C and the Common Cold. Journal of the American Medical Association. 971;216:332.

4. Shult PA, Dick EC, Olander D, et al. 1990. Diminished rhinovirus (RV) illness severity correlates with increased leukocyte ascorbic acid (AA) Levels. Thirtieth Interscience Conference on Antimicrobial Agents and Chemotherapy, Atlanta, GA, Abstract 1285.

5. Farr BM, Gwaltney JM. Zinc gluconate for the common cold: An evaluation of placebo matching. Journal of Chronic Diseases. 1987;40:875-879.

6. Eby GA, Davis DR, Halcomb WW. Reduction in duration of common cold symptoms by zinc gluconate lozenges in a double blind study. Antimicrobial Agents and Chemotherapy. 1984; 25:20-24.

7. Al-Nakib W, Higgins PG, Barrow I. et al. Prophylaxis and treatment of rhinovirus colds with zinc gluconate lozenges. Journal of Antimicrobial Chemotherapy. 1987;20: 893-901.

8. Osol A. Astringents and antiperspirants. In: Osol A. ed. Remington's Pharmaceutical Sciences, 16th Edition. Easton:Mack Publishing Co. 1980;720-722.

9. Markowitz ME, Rosen JF, Mizruchi M. Circadian variations in serum zinc (Zn) concentrations: correlation with blood ionized calcium, serum total calcium and phosphate in humans. American Journal of Clinical Nutrition. 1985;41:689-696.

10. Molokhia M, Sturniolo G, Shields R, et al. A simple method for measuring zinc absorption in man using a short-lived isotope (69mZn). The American Journal of Clinical Nutrition. 1980;33:881-886.

11. Pasternak CA. A novel form of host defense: membrane protection by calcium and zinc ions. Bioscience Reports. 1987;7:81-91.

12. Radetsky P. Cold Front - What's new and what works. American Health. 1993;12(8):56-62.