1. ECETOC 2006. Synthetic Amorphous Silica (CAS No. 7631-86-9). In: M Gribble (Ed.): Joint Assessment of Commodity Chemicals (JACC) Report, No. 51. Brussels, Belgium: ECETOC
2. FAO/WHO 4-9th July 2011. Joint FAO/WHO food standards programme. Codex Alimentarius Commission, Session 34. Geneva: World Health Organization.
3. FAO/WHO 2011. Safety Evaluation of Certain Food Additives and Contaminants. FAO Nutrition Meeting Report, Series 64. Geneva: World Health Organization.
4. FAO/WHO 1975. Specifications and Toxicological Evaluation of Some Food Additives. FAO Nutrition Meeting Report, Series 55A. Geneva: World Health Organization.