J. Li, and J. Knippers. Rethinking Prototyping: Proceedings of the Design Modelling Symposium Berlin 2013, page 31 -44. Berlin, Universität der Künste, (2013)
K. Hwang, J. Knippers, and S. Park. Evolution and Trends in Design, Analysis and Construction of Shell ans Spatial Structures, IASS Symposium, page 426 – 427. Valencia, Spain, (28. Sept.r – 2. Oct. 2009)
J. Knippers, and T. Helbig. IASS Symposium Shell and Spatial Structures: Structural Architecture – Towards the future looking to the past, page 207 – 208. Venice, Italy, (3-6 December 2007)
J. Knippers, and T. Helbig. Evolution and Trends in Design, Analysis and Construction of Shell ans Spatial Structures, IASS Symposium, page 328 – 329. Valencia, Spain, (28. Sept. – 2. Oct. 2009)
