1. Pimentel, G.C., Mc Clellan, A.L. (1960) ‘The Hydrogen Bond’, Freeman, San Francisco.
2. Vinogradov, S.N., Linnel, R.H. (1971) ‘Hydrogen Bonding’, Van Nostrand-Reinhold, New York.
3. Joesten, M.J., Schaad, L.J. (1974), ‘Hydrogen Bonding’, Dekker, New York.
4. Schuster, P., Zundel, G., Sandorfy, C. (1976), ‘The Hydrogen Bond’, North-Holland, Amsterdam.
5. Novak, A. (1974) Struct. Bonding, 18, 177.