Journal Article
Y. Ralchenko, J. Reader, J. M. Pomeroy, J. N. Tan, and J. D. Gillaspy, J. Phys. B 40, 3861 (2007).
Book
R. Karazija, Introduction to the Theory of X-Ray and Electronic Spectra of Free Atoms(Plenum Press, New York, 1996).
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