1. A. A. Chodos, J. J. R. Branco, and C. G. Engel, “Rock Analysis by X-Ray Fluorescence Spectroscopy,” Advances in X-Ray Analysis, Vol. 1, University of Denver, Plenum Press, New York, 1960, p. 315.
2. A.A. Chodos and C. G. Engel, ‘Fluorescent X-Ray Spectrographic Analyses of Amphibolite Rocks,’ Am. Mineral, 1961, in press.
3. H. W. Fairbairn, “A Cooperative Investigation of Precision and Accuracy in Chemical, Spectrochemical, and Modal Analysis of Silicate Rocks,” U.S. Geol. Survey Bull., 980, 1951.
4. A. E. J. Engel and C. G. Engel, ‘Progressive Metamorphism and Granitization of the Major Paragneiss, Northwest Adirondack Mountains, New York, Part I: Total Rock, “ Bull. Geol. Soc. Am., Vol. 69, November, 1958, p. 1369.
5. A. E. J. Engle and C. G. Engel, ‘Progressive Metamorphism and Granitization of the Major Paragneiss, Northwest Adirondack Mountains, New York, Part II: Mineralogy,“ Bull. Geol. Soc. Am., Vol. 71, January, 1960, p. 1.