1. AOAC. 2006. Official Methods of Analysis. Vol. I and II. 18th ed. Association of Official Analytical Chemists Gaithersburg, MD.
2. Comparison of different methods for fortifying Cheddar cheese with vitamin D;Banville;Int. Dairy J.,2000
3. Vitamin D: A calciotropic hormone regulating calcium-induced keratinocyte differentiation;Bikle;J. Am. Acad. Dermatol.,1997
4. Plants as a source of vitamin D3 metabolites;Boland;Nutr. Rev.,1986
5. Vitamin D and cancer;Bouillon;J. Steroid. Biochem. Mol. Biol.,2006