1. 1) Ministry of Health and Welfare, “Japan's Specifications and Standards for Food Additives, 7th Ed.”, English Version, reproduced by Japan Food Additives Association, Japan, 2000, p. M125-M126, M125, M271-M272, U339, U349, U352 (2000).
2. 2) Suzuki, I. et al. eds., “Shokuhintenkabutsu Koteisyo Kaisetsusho”, Hirokawa Shoten, 1999, p. F-12, F-21, F-25, F-27 (ISBN4-567-01852-4).
3. 3) The Joint FAO/WHO Expert Committee on Food Additives, “Compendium of food additive specification volume 2”, Food and Agriculture Organization of the United Nations (FAO), Rome, 1992, p. 245, 249, 253, 1311, 1485.
4. 4) Code of federal regulations, “Food and Drug, Title 21”, National Archives and Records Administration, 2004, Parts 166, 172, 173, 175-177, 181, 182, 184.
5. 5) Japan Food Additives Association ed., “Sekai No Shokuhintennkabutsu Gaisetsu—JECFA To Shuyokoku No Ninkahinmoku Risuto—”, Japan Food Additives Association, Tokyo, 2004.