1. G. C. Pimentel and A. L. McClellan, The Hydrogen Bond (San Francisco: W. H. Freeman, 1960).
2. R. P. Bell, The Proton in Chemistry, 2nd ed. (Chapman and Hall, London, 1973).
3. D. Eisenberg and W. Kauzmann, The Structure and Properties of Water (Oxford University Press, New York, 1969).
4. R. P. Bell, The Tunnel Effect in Chemistry (Chapman and Hall, London, 1980).
5. Y. Cha, C. J. Murrat, and J. P. Klinman, Science 243, 1325 (1989).