STRUCTURE OF SODIUM ALUMINOSILICATE GLASSES : T1 LUMINESCENCE SPECTROSCOPY P.I.K. Onorato, M.N. Alexander, C.W. Struck, G.W. Tasker et D.R. Uhlmann J. Phys. Colloques, 46 C8 (1985) C8-235-C8-240 DOI: 10.1051/jphyscol:1985834