1. S. R. Hartshorn, Aliphatic Nucleophilic Substitution, Cambridge University Press, Cambridge, 1973 , and references contained therein.
2. Substitution at a saturated carbon atom. XVII. Organic ion pairs as intermediates in nucleophilic substitution and elimination reactions
3. R. A. Y. Jones, Physical and Mechanistic Organic Chemistry, 2nd ed., Cambridge University Press, Cambridge, 1984, pp. 155–158 , and references contained therein.
4. M. B. Smith, J. March, March’s Advanced Organic Chemistry, Reactions, Mechanism, and Structure, 5th ed., J. Wiley & Sons, New York, 2001, p. 436 , and references contained therein.