1. Official Analytical Methods for Residual Substances in Livestock Products, Vol. 1. Veterinary Sanitation Division, Environmental Health Bureau, Ministry of Health and Welfare, Japan, 1977, p. 27.
2. The Use of 2,3,5-Triphenyltetrazolium Chloride as a Test for Antibiotic Substances in Milk
3. Japan International Dairy Federation, 53rd International Dairy Federation Annual Conference, 1969, Report No. 18.
4. Official Analytical Methods for Residual Substances in Livestock Products, Vols. 1(2), Veterinary Sanitation Division, Environmental Health Bureau, Ministry of Health and Welfare, Japan, 1979, p. 8.