1. Desiraju GR, Steiner T. The weak hydrogen bond in structural chemistry and biology. Oxford: Oxford University Press; 1999.
2. Jeffrey GA. An introduction to hydrogen bonding. New York: Oxford University; 1997.
3. Scheiner S. Hydrogen bonding: a theoretical perspective. Oxford: Oxford University Press; 1997.
4. Evidence for two kinds of hydrogen bond in ice
5. Supramolecular Chemistry