CHEMISTRY AND PHYSICS OF MOLECULAR BASED FERROMAGNETS Y. Journaux, P. Van Koningsbruggen, F. Lloret, K. Nakatani, Y. Pei, O. Kahn et J. P. Renard J. Phys. Colloques, 49 C8 (1988) C8-851-C8-852 DOI: 10.1051/jphyscol:19888384