Reflectance, fluorescence yield, and photoelectron spectroscopy of CaF2 in the 10 to 100 eV range R. T. Williams, D. J. Nagel et M. N. KablerJ. Phys. Colloques, 41 C6 (1980) C6-439-C6-442DOI: https://doi.org/10.1051/jphyscol:19806114
