INFRARED AND RAMAN STUDIES ON VARIOUS PHASES OF ICE UNDER PRESSURES UP TO 53 GPa W. B. HOLZAPFEL, P. G. JOHANNSEN et M. KROBOKJ. Phys. Colloques, 48 C1 (1987) C1-639DOI: https://doi.org/10.1051/jphyscol:1987188