1. FAO/WHO. 1978. Evaluation of certain food additives. 21st Report of the Joint Food and Agriculture Organisation and World Health Organisation (FAO/WHO) Expert Committee on Food Additives. 1978, Rome. WHO Technical Report Series No. 617,
2. FAO/WHO. 1989. Evaluation of certain food additives and contaminants performed by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). 1989, Rome. 33rd Report, Food and Agriculture Organisation and World Health Organisation.
3. FAO/WHO. 1999. Summary of evaluation performed by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). 1999, Rome. Food and Agriculture Organisation and World Health Organisation.