PROPERTIES OF CALCIUM FLUORIDE MONOCRYSTALS IN THE ULTRA LOW FREQUENCY RANGE, SPACE CHARGE AND IMPURITY EFFECTS M. MAITROT et R. MADRUJ. Phys. Colloques, 37 C7 (1976) C7-349-C7-352DOI: https://doi.org/10.1051/jphyscol:1976780
