1. Commission Directive 2001/15/EC of 15 February 2001 on substances that may be added for specific nutritional purposes in foods for particular nutritional uses;EC;Official Journal of the European Communities,2001
2. Directive 2002/46/EC of the European Parliament and of the Council on the approximation of the laws of the Member States relating to food supplements;EC;Official Journal of the European Communities,2002
3. European Parliament and Council Directive 95/2/EC of 20 February 1995, on food additives other than colours and sweeteners, amended by Directives 96/85/EC, 98/72/EC, 2001/5/EC, 2003/52/EC, 2003/114/EC and Directive 2006/52/EC;EC;Official Journal of the European Communities,2006
4. EFSA, European Food Safety Authority 2005 Opinion of the NDA Panel related to the Tolerable Upper Intake Level of Potassium www.efsa.europa.eu/en/science/nda/nda_opinions/852.html
5. JECFA 1974 Toxicological evaluation of certain food additives with a review of general principles and specifications (Seventeenth report of the Joint FAO/WHO Expert Committee on Food Additives)