Considerations Using Heat Bent or Cold Bent, Curved Glass Elements for Assembling Full Glass Shells. In J. Schneider, and Bernhard Weller (Eds.), Engineered Transparency Conference Proceedings, 135, Düsseldorf, 2012. [PUMA: curved architecure glass using bent assembling 2012 knippers engineering shell cold considerations itke from:petraheim element fildhuth full heat]