RAMAN SPECTRUM STUDIES OF THE COORDINATIONS OF ALUMINIUM AND BORON IN Na2O-Al2O3-B2O3-P2O5 GLASSES Yin Yifen, Jiang Dehua, Chen Xiangsheng, Bian Beiya et Huang Xihuai J. Phys. Colloques, 46 C8 (1985) C8-311-C8-315 DOI: 10.1051/jphyscol:1985846