Chemical Durability and Structural Proprieties of the Vitreous Part of the System xCaO-(40-x)ZnO-15Na&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;O-45P&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;O&amp;lt;sub&amp;gt;5&amp;lt;/sub&amp;gt;
Advances in materials physics and chemistry