1. 1) Cotton, F. A., G. Wilkinson, “Advanced Inorganic Chemistry: A Comprehensive Text,” 4th ed. John Wiley & Sons, New York, 1980, p. 745.
2. 2) The Japan Society for Analytical Chemistry, “Bunsekikagaku Binran,” Maruzen, Tokyo, 1967, p. 339.
3. 4) Blau F., Monatsh., 19, 647 (1898).
4. 5) Saywell L. G., Cunningham, B. B., Ind. Eng. Chem., Anal. Ed., 9, 67 (1937).
5. 6) Wenger P., Duckert R., Helv. Chim. Acta, 27, 757 (1944).