HYPERFINE INTERACTION OF THE Fe2+ ION IN Fe(H2O)6·(ClO4)2 H. SPIERING, D. L. NAGY et R. ZIMMERMANNJ. Phys. Colloques, 35 C6 (1974) C6-231-C6-234DOI: https://doi.org/10.1051/jphyscol:1974629