1. Neiger, M.; Hupper, H.; Bolte, M. Acta Crystallogr. 1998, C54, 656.
2. Brock, C.P.; Haller, K.L. J. Phys. Chem. 1984, 88. 3570.
3. Pandi, A.S.; Vermurugan, D.; RaghuKumar, V.; RamaKrishnan, V.T.; Sundraraj, S.S.; Fun, H.-K. Crystallogr. Res. Technol. 2000, 35, 1373.
4. Reboul, J.P.; Pepe, G.; Siri, D.; Oddon, Y.; Caranoni, C.; Rahal, H.; Soyfer, J.C.; Barbe, J. Acta Crystallogr. 1993, C49, 735.
5. Jeffrey, G.A.; Saenger, W. Hydrogen Bonding in Biological Structures, Springer Verlag, Berlin, 1999.