1. G. Racah:Phys. Rev.,63, 367 (1943).
2. E. T. Condon andG. H. Shortley:The Theory of Atomic, Spectra (London, 1951), p. 123.
3. A. E. Edmond andB. H. Flowers:Proc. R. Soc. London Ser. A,214, 515 (1952);215, 398 (1952).
4. E. U. Condon andG. H. Shoetley:The Theory of Atomic Spectra (London, 1951), p. 287.
5. E. U. Condon andG. H. Shortley:The Theory of Atomic Spectra (London, 1951), p. 291.