OPTICAL ABSORPTION SPECTRA OF CAESIUM IODIDE (CsI ) AT PRESSURES UP TO 60 GPa I.N. Makarenko, A.F. Goncharov et S.M. Stischov J. Phys. Colloques, 45 C8 (1984) C8-43-C8-45 DOI: 10.1051/jphyscol:1984808