1. M. Milton, R.S. Macomber, A.R. Pinhas, R.M. Wilson, The Vocabulary and Concepts of Organic Chemistry, J. Wiley & Sons, Haboken, New Jersey, 2005, pp. 529, 772.
2. Amphoteric Surfactants;Domingo,1996
3. G. Schaack, Ferroelectrics 104 (1990) 147 (and references cited therein).
4. The Chemistry of N-Substituted Pyridinium Salts
5. Quaternary Ammonium Salts. Their Use in Phase-Transfer Catalysis;Jones,2001