1. M. R. C. McDowell and J. P. Coleman, Introduction to the Theory of Ion-Atom Collisions (North-Holland, Amsterdam, 1970). See Chapter 3.
2. F. Hopkins, in Methods of Experimental Physics: Atomic Physics-Accelerators (Academic, New York, 1980) edited by P. Richard, Vol. 17, p.335. See in particular Ch. 8.3 and references therein.
3. R. L. Kauffman, J. H. McGuire, P. Richard, and C.F. Moore, Phys. Rev. A 8, 1233 (1973). The projectile-target combinations, for which the PL(0) data are analyzed in our work, are identified by the atomic numbers Z1 and Z2 and listed using [Z1:Z2] format. In this particular reference, they were [1:20,21,22,23,24,25; 2:20,21,22,23,24,25; 8:20,21,22,24,25; 9:10].
4. T. K. Li, R. L. Watson, and J. S. Hansen, Phys. Rev. A 8, 1258 (1973); T. K. Li, Ph.D. Thesis, Texas A & M University, unpublished, (1973), [1:20,22,26; 2:20,22,26; 6:22]. Note that the Z1 = 1 projectiles of this reference were deuterons.
5. P. Richard, R. L. Kauffman, J. H. McGuire, C. F. Moore, and D. K. Olsen, Phys. Rev. A 8, 1369 (1973), [2:13].