1. Scheiner S 1997 In Intermolecular Interactions–From Van der Waals to Strongly Bound Complexes (New York: Wiley)
2. Desiraju G R, Steiner T 1999 In The Weak Hydrogen Bond in Structural Chemistry and Biology (New York: Oxford University Press)
3. Gerlt J A, Kreevoy M M, Cleland W W and Frey P A 1997 Chem. Biol. 4 259
4. Sobczyk L, Grabowski S J and Krygoswki T M 2005 Chem. Rev. 105 3513
5. Jeffrey G A 1997 In An Introduction to Hydrogen Bonding: Topics in Physical Chemistry (New York: Oxford University Press)