1. Anonymous, Qualitative Discussions on the Subject of Insulating Glass (in German). Chemetall GmbH, Frankfurt/Main (Germany).
2. Stresses on Insulating Glass Units due to Climatic Variations (in German);Feldmeier;Fenster und Fassade,1984
3. The Ageing Behaviour of Insulating Glass (in German);Feldmeier,1984
4. Material Science of Glass (in German);Spauszus,1975
5. The Ageing Behaviour of Insulating Glass—Laboratory Tests to Predict the Long-Term Performance of Insulating Glass Units (in German);Van Santen;Glaswelt,1986