1. H. M. Hulbert and J. O. Hirschfelder, J.Chem.Phys., 11, 276 (1943). For later developments, see the following reviews, articles and references contained therein.
2. M. Baer, ‘A Review of Quantum Mechanical Approximate Treatments of Three Body Reactive Systems’, Advances in Chemical Physics, Vol. 49, eds., I Prigogine and S. A. Rice (Wiley, N.Y., 1982) 191.
3. M. Eaer, ‘General Theory of Reactive Scattering. The Differential Equation Approach’, in Theory of Chemical Reaction Dynamics, ed. M. Baer (C.R.C. Press, Boca Raton, Fl., 1985).
4. R. E. Wyatt, ‘Direct-Mode Chemical Reactions I. Methodology for Accurate Quantal Calculations’, in Atom-Molecule Collision Theory. A Guide for the Experimentalist, Ed. R. B. Bernstein (Plenum, N.Y., 1979) 567.
5. A. Kuppermann, G. C. Schatz and M. Baer, J.Chem.Phys., 65, 4596 (1976).