NETWORK DIMENSIONALITY OF AMORPHOUS GeS2 : OPTICAL HIGH-PRESSURE EXPERIMENTS ON a-GeS2, 2d-GeS2, AND 3d-GeS2 R. Zallen, B.A. Weinstein et M.L. Slade J. Phys. Colloques, 42 C4 (1981) C4-241-C4-244 DOI: 10.1051/jphyscol:1981451