1. L. V. Azâroff, Theory of Extended Fine Structure of X-Ray Absorption EdgesRev. Mod. Phys. 35(4): 1012, 1963.
2. C. G. Dodd and D. J. Kaup, “Determination of Iron Oxidation States in Clay Minerals by X-Ray Absorption Edge Fine-Structure Spectrometry,” Clay Minerals Bull. 5 (30): 290, 1963.
3. T. C. Fumas, Jr., and E. W. White, “New Instruments for X-Ray Analysis,” in: W. M. Mueller (ed.), Advances in X-Ray Analysis,Vol. 4, Plenum Press, New York, 1961, pp. 521537.
4. J. B. Goodenough, “Direct Cation—Cation Interaction in Several Oxides,”Phys. Rev. 117: 1442 1451, 1960.
5. A. I. Kozlenkov,Theory of the Fine Structure of X-Ray Absorption SpectraBull. Acad. Sci. USSR Phys. Ser. (English Transi.) 25 (8): 968–987, 1961.