A MAGIC ANGLE SPINNING NMR STUDY OF THE EFFECT OF MODIFIER AND INTERMEDIATE OXIDES ON THE LOCAL STRUCTURE IN VITREOUS SILICATE NETWORKS R. Dupree, D. Holland et D. S. WilliamsJ. Phys. Colloques, 46 C8 (1985) C8-119-C8-123DOI: https://doi.org/10.1051/jphyscol:1985815