1. T. E. Madey and J. T. Yates, Jr., Chem. Phys. Lett. 51, 77 (1977); CHPLBC0009-2614
2. see also T. E. Madey and J. T. Yates, Jr., Proceedings of the 7th International Vacuum Congress and the 3rd International Conference of the Solid Surfaces, Vienna 2, 1183 (1977).
3. H. Ibach and S. Lehwald, Surf. Sci. 91, 187 (1980).SUSCAS0039-6028
4. B. A. Sexton, Surf. Sci. 94, 435 (1980).SUSCAS0039-6028
5. The Hydrogen Bond: Recent Developments in Theory and Experiments, edited by P. Schuster, G. Zundel, and C. Sandorfy (North‐Holland, Amsterdam, 1976).