1. A. Volborth, “Total Instrumental Analysis of Rocks,” Nevada Bur. Mines Rept. 6: A1–72, B1–12, 1963.
2. A. Volborth, “Hard, Soft, and Ultrasoft X-Radiation Combined with Fast-Neutron Activation, Applied to the Total Analysis of Rocks,” Materials Science and Technology for Advanced Application, Vol. II, American Society for Metals, San Francisco, 1964, pp. 117–142.
3. A. Volborth, “Rock Analysis for Geochemical Studies by Combining X-ray Fluorescence and Neutron Activation Techniques,” in: 22nd International Geological Congress, Rept., India, 1964 (in press).
4. A. K. Baird and B. L. Henke, “Oxygen Determination in Silicates and Total Major Elemental Analysis of Rocks by Soft X-ray Spectrometry,” Anal. Chem. 37: 727–729, 1965.
5. A. Volborth and B. P. Fabbi, “X-Ray Spectrographic Determination of 38 Trace Elements in a Granite and Standards G-1 and W-1,” XIII Colloquium Spectroscopicum Internationale, Ottawa, Canada, Abstracts of Papers, p. 120, 1967.