1. Determination of acidity constants
2. Connors K. A.: A Textbook of Pharmaceutical Analysis, 2nd ed., John Wiley and Sons, New York, NY, pp. 127–133, 147, 184–186, 204, 205, 221, 222, 1975.
3. Potentiometric determination of dissociation constants
4. Connors K. A.: In Higuchi T., Brochmann-Hanssen E., eds. Pharmaceutical Analysis, John Wiley and Sons, New York, N.Y., pp. 226, 227, 1961.