MÖSSBAUER STUDIES OF THE ACTTVATED STATE OF Co-Mo HYDRODESULFURIZATION CATALYSTS B. S. CLAUSEN, S. MØRUP, H. TOPSØE et R. CANDIA J. Phys. Colloques, 37 C6 (1976) C6-249-C6-252 DOI: 10.1051/jphyscol:1976650