1. (a) The Proton in Chemistry. Cornell University Press: Ithaca, NY, 1959;
2. (b) (eds). Proton-transfer Reactions. Chapman and Hall: London, 1975;
3. (c) The Proton: Application to Organic Chemistry. Academic Press: Orlando, FL, 1985.
4. Einige Bemerkungen über den Begriff der Säuren und Basen
5. Acid and Basic Catalysis.