1. D. Husain, G. Roberts, Advances in gas-phase photochemistry and kinetics, in: Bimolecular Collisions, Royal Society of Chemistry, London, 1989, p. 263.
2. W.H. Breckenridge, in: A. Fontijn, M.A.A. Clyne (Eds.), Reactions of Small Transient Species: Kinetics and Energetics, Academic Press, London, 1983, p. 157.
3. The tilden lecture. Fundamental collisional processes of alkali and alkaline earth atoms studied by spectroscopic methods
4. C.E. Moore (Ed.), Atomic Energy Levels, Nat. Bur. Stand. Ref. Data Ser., Vol. 35, Parts I–III, US Government Printing Office, Washington, DC, 1971.