1. I. Adler and J.M. Axelrod, “Application of X-Ray Fluorescence Spectroscopy to Analytical Problems,” Norelco Reporter, Vol. 3, 1956, p. 65.
2. F. Claisse, “Accurate X-Ray Fluorescence Analyses Without Internal Standard,” Quebec Dept. Mines Prelim. Rept., No. 327, 1956.
3. E.L. Gunn, “Fluorescent X-Ray Spectral Analysis of Powdered Solids by Matrix Dilution,” Anal. Chem., Vol. 29, 1957, p. 184.
4. H.A. Liebhafsky et al., X-Ray Absorption and Emission in Analytical Chemistry, John Wiley & Sons, New York, 1960, p. 173.
5. R.K. Scott, “Analysis of Clays, Bauxites and Other Silicates by the X-Ray Spectrograph,” Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, Pittsburgh, Pa., March 1957.