1. For a review see e. g. P. Kusch, V. W. Hughes: InHandbuch der Physik, Vol. 37, 1. ed. by S. Flügge (Springer, Berlin, Göttingen, Heidelberg 1959) pp. 1–172
2. H. Lew: InMethods of Experimental Physics, Vol. 4Atomic and Electron Physics, Part A, ed. by V. W. Hughes, H. L. Schultz (Academic Press, New York, London 1967) pp. 183–187
3. R. F. Stebbings: Proc. Roy. Soc. (London) A241, 270–82 (1957)
4. E. W. Rothe, R. H. Neynaber, S. M. Trujillo: J. Chem. Phys.42, 3310–14 (1965)
5. S. Y. Tang, A. B. Marcus, E. E. Muschlitz: J. Chem. Phys.56, 566–72 (1971)