1. 1. JIS K 8005, “Reference Materials for Volumetric Analysis”, 1999, Japanese Industrial Standards Committee, Tokyo.
2. 2. Analytical Methods Committee, Analyst, 1967, 92, 587.
3. 3. T. Yoshimori and N. Sakaguchi, Talanta, 1975, 22, 233.
4. 4. T. Katoh, Bunseki Kagaku, 1953, 2, 402.
5. 5. R. Belcher, A. J. Nutten, and A. M. G. MacDonald, “Quantitative Inorganic Analysis”, 3rd ed., 1970, Butterworths Scientific Publications, London, 161.