ELECTRONIC PROPERTIES OF Er3+ IN ErRh4B4 B. D. Dunlap, G. K. Shenoy, F. Y. Fradin et C. W. KimballJ. Phys. Colloques, 39 C6 (1978) C6-379-C6-380DOI: https://doi.org/10.1051/jphyscol:19786169
