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2. G.A. Jeffrey, An Introduction to Hydrogen Bonding, Oxford University Press, New York, 1997.
3. S. Scheiner, Hydrogen Bonding, Oxford University Press, New York, 1997.
4. E.R. Bernstein (Ed.), Atomic and Molecular Clusters, Elsevier, Amsterdam, 1990.
5. Supersonic jet spectroscopy for the study of hydrogen bonding