1. Ingold, C.K., Structure and Mechanism in Organic Chemistry, Ithaca: Cornell Univ. Press, 1969. Translated under the title Teoreticheskie osnovy organicheskoi khimii, Moscow: Mir, 1973, p. 352.
2. Hammett, L.R., Physical Organic Chemistry. Reaction Rates, Equilibria, and Mechanisms, New York: McGraw-Hill, 1970, 2nd ed. Translated under the title Osnovy fizicheskoi organicheskoi khimii, Moscow: Mir, 1972, p. 189.
3. Gordon, J.E., The Organic Chemistry of Electrolyte Solutions, New York: Wiley, 1975. Translated under the title Organicheskaya khimiya rastvorov elektrolitov, Moscow: Mir, 1979, p. 556.
4. Loupy, A. and Tchoubar, B., Effets de sols en chimie organique et organometallique, Paris: Bordas, 1988. Translated under the title Solevye effekty v organicheskoi i metalloorganicheskoi khimii, Moscow: Mir, 1991, p. 22.
5. Raber, D.J., Harris, J.M., and Schleyer, P.v.R., Ions and Ion Pairs in Organic Reactions, Szwarc, M., Ed., New York: Wiley, 1974, vol. 2, p. 374.