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W. Haase, und W. Sobek. Shell and Spatial Structures: Structural Architecture - Towards the Future Looking to the Past, IASS Symposium, December 3-6, 2007, Venice, Italy, Venice, University IUAV of Venice, (2007)
W. Haase, und W. Sobek. Challenging Glass 1, Conference on Architectural and Structural Applications of Glass, May 22-23, 2008, Delft, Seite 591--600. Amsterdam, IOS Press, (2008)