1. (a) R.P. Bell, The Proton in Chemistry, 2nd ed., Cornell University Press, Ithaca, NY, 1973.
2. (b) J.R. Jones, The Ionization of Carbon Acids, Academic Press, London, 1973.
3. (c) R. Stewart, The Proton: Applications to Organic Chemistry, Academic Press, Orlando, FL, 1985.
4. (a) E. Buncel, Carbanions. Mechanistic and Isotopic Aspects, Elsevier, Amsterdam, 1975.
5. (b) V.A. Snieckus (Ed.), Advances in Carbanion Chemistry, vol. 1, JAI Press, Greenwich, Connecticut, 1992; vol. 2, JAI Press, Greenwich, Connecticut, 1994.