1. Tanganov, B.B. and Alekseeva, I.A., Zh. Obshch. Khim., 2006, vol. 76, no. 11, p. 1800.
2. Speakman, J.C., J. Chem. Soc., 1940, p. 855.
3. Albert, A. and Serjeant, E., Ionization Constants of Acids and Bases. A Laboratory Manual, New York: Wiley, 1962.
4. Bates, R.G., Determination of pH. Theory and Practice, New York: Wiley, 1964.
5. Tanganov, B.B. and Alekseeva, I.A., Zh. Obshch. Khim., 2005, vol. 75, no. 11, p. 1775.