1. T. Sone, “Midzu no Bunseki,” Kagaku Dojin Co. Ltd., Tokyo, 1973, p. 340.
2. T. Tachibana, “Jikken Kagaku Koza,” Vol. VII, ed. by M. Kotake and others, Maruzen Co. Ltd., Tokyo, 1968, pp. 324–331.
3. For example, T. Shirotsukaet al., “Kagaku-kogaku Binran,” ed. by S. Maedaet al., Maruzen Co. Ltd., Tokyo, 1978, p. 948.
4. K. Edaet al., “Kagaku Binran,” ed. by T. Sasakiet al., Maruzen Co. Ltd., Tokyo, 1970, p. 533.