1. Chrom und körperliche Leistungsfähigkeit;Anderson;VitaMinSpur,1989
2. Hyponatriaemia: a prospective analysis of its epidemiology and the pathogenetic role of vasopressin;Anderson;Ann Int Med,1985
3. Results of two major trials at b-carotene supplementation;Anonymous;Antioxidant Vitamins Newsletter,1996
4. Vitamin A und Retinoide;Bässler;DAZ,1988
5. Vitamin-Lexikon;Bässler,1992