1. See for example: H. A. Liebhafsky, et al., X-ray Absorption and Emission in Analytical Chemistry, John Wiley & Sons, Inc., New York, 1960.
2. A. H. Compton and S. K. Allison, X-rays in Theory and Experiment, second edition, D. Van Nostrand Co., Inc., Princeton, N. J., 1935, p. 482.
3. Handbuch Der Physik;AE Sandstrom,1957
4. A. H. Compton and S. K. Allison, X-rays in Theory and Experiment, second edition, D. Van Nostrand Co., Inc., Princeton, N.J., 1935, pp. 783–790.
5. S. Fine and C. F. Hendee, A Table of X-ray K and L Emission and Critical Absorption Energies for All the Elements, Philips Laboratories, Irvington-on-Hudson, New York.