1. I. H. Warren and E. Devuyst:Leaching of Oxide, D. I. J. Evans and R. S. Shoemaker, Eds., pp. 229–64, International Symposium on Hydrometallurgy, Chicago, AIME, NY, 1973.
2. D. J. G. Ives and J. J. George:Reference Electrodes, Academic Press, NY, 1961.
3. K. J. Vetter:Electrochemical Kinetics, p. 49, Academic Press, NY, 1967.
4. T. Yazaki: Master of Engineering, Thesis, Kyoto University, 1978.
5. V. S. Surana and I. H. Waren:frans. Inst. Min. Met., Sec. C, 1969, vol. 78, pp. 133–39.