1. R.C. Reynolds, Jr., “Matrix Corrections in Trace Element Analysis by X-Ray Fluorescence: Estimation of the Mass Absorption Coefficient by Compton Scattering,” Am. Mineralogist 48: 1133–1143 (1963).
2. J. Mitchell, “ X-Ray Spectrophotographic Determination of Tantalum, Niobium, Iron, and Titanium Oxide Mixtures.” Anal. Chem. 30: 1894–1900 (1958).
3. M. Fleischer and R. E. Stevens, “Summary of New Data on Rock Samples G 1 and W1,” Geochim, Cosmochim, Acta 26:525–545 (1962)
4. P.D. Zemany, “Line Interference Corections for X_Ray Spectrographic Determination of Vanadium, Chromium, and Manganese in Low-Alloy Steels,” Spectrochim. Acta 16:736–741 (1960)
5. A. H. Compton and S. K. Allison, X-Rays in Theory and Experiment, D. Van Nostrand Co., Inc., Princeton, N. J. (1935).