1. For a critical survey of recent progress on calculating PE surfaces and their use in molecular beam kinetics and chemical kinetics see: Sinanoğlu, O.: 1971, Comm. Atomic Mol. Phys. III, 53.
2. Sinanoğlu, O.: J. Mol. Structure (Special Proceedings Issue of International Conference on Molecular Spectroscopy, Wrøclaw, Poland, Sept. 15–19, 1972).
3. See e.g. how this happens already in diatomic gas equilibria A2⇌2A at higher temperatures, necessitating full U(R) methods for thermodynamic properties: Sinanoğglu, O. and Pitzer, K. S.: 1959, J. Chem. Phys. 31, 960.
4. See e.g. Hill, T. L.: 1956, Statistical Mechanics, Mraw-Hill, New York.
5. Sinanoglu, O.: 1968, in Molecular Associations in Biology (ed. by B. Pullman), Academic Press, New York, p. 427.