1. Metabolism and function of vitamin A;Olson JA;Federation Proceedings,1969
2. Hipovitaminose A no Brasil: um problema de saúde pública;Ramalho RA;Rev Panam Salud Publica,2002
3. Global prevalence of vitamin A deficiency (WHO/NUT/95.3),1995
4. Quantification of "SLAMENGHI" factors for carotenoid bioavailability and bioconversion;West CE;Int J Vit Nutr Res.,1998
5. Dietary Reference intakes for vitamin A, vitamin K, arsenic, boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, silicon, vanadium, and zinc,2001