THE INFLUENCE OF OXYGEN ON THE ELECTRICAL PROPERTIES OF CaF2 AND BaF2 SINGLE CRYSTALS A. HAMMOU, M. DUCLOT et V. A. LEVITSKIIJ. Phys. Colloques, 37 C7 (1976) C7-342-C7-348DOI: https://doi.org/10.1051/jphyscol:1976779