Notes on Cowley, J. M. (2006). Scattering factors for the diffraction of electrons by crystalline solids. In International Tables for Crystallography (Vol. C, pp. 259–429). https://www.wiley.com/en-ie/International+Tables+for+Crystallography%2C+Volume+C%3A+Mathematical%2C+Physical+and+Chemical+Tables%2C+3rd+Edition-p-9780470710296

cowley (IUCr Series. International Tables of Crystallography) E. Prince (Ed.) - International Tables for Crystallography Volume C_ Mathematical, physical and chemical tables. C-Wiley (2007) copy.pdf

References therein

• Peng, L. M., Ren, G., Dudarev, S. L., & Whelan, M. J. (1996). Robust parameterization of elastic and absorptive electron atomic scattering factors. Acta Crystallographica Section A: Foundations of Crystallography, 52(2), 257–276. http://doi.org/10.1107/S0108767395014371