1. Addis, P.B., Food Chem. Toxicol., 24 (1986) 1021.
2. Haigh, R ., Food Chem. Toxicol., 24 (1986) 1031.
3. Joint FAO/WHO Expert Committee on Food Additives, Tech. Rep. Ser. Wld Hlth Org. 669 (1981) 52.
4. Joint FAO/WHO Expert Committee on Food Additives, Tech. Rep. Ser. Wld Hlth Org., 539 (1974) 146.
5. Agricultural Research Council/Medical Research Council Committee Report, Food Nutr. Res., 72 (1974), HMSO, London.