1. Internal friction of NaPO3 glasses containing water
2. presented at the Third R.C.M. Conference;Day,1974
3. presented at the Third R.C.M. Conference;Verstegen,1974
4. presented at the Third R.C.M. Conference;van Ass,1974
5. H.M.J.M. van Ass and J.M. Stevels, J. Non-Crystalline Solids, to be published.