1. W. Forst, Theory of Unimolecular Reactions (Academic, New York, 1973), p. 149.
2. (a) P. Pechukas, in Dynamics of Molecular Collisions, edited by W. H. Miller (Plenum, New York, 1976), Part B, Chap. 6, p. 269;
3. (b) I. W. M. Smith, Kinetics and Dynamics of Elementary Gas Reactions (Butterworths, London, 1980), p. 113.
4. K. J. Laidler, Theories of Chemical Reaction Rates (McGraw‐Hill, New York, 1969), p. 125.
5. H. S. Johnston, Gas Phase Reaction Rate Theory (Ronald, New York, 1966), p. 266.