D. Park, und J. Knippers. Conference proceeding of the 9th Asian Pacific Conference on Shell and Spatial Structures (APCS2009), Seite 147 – 148. Nagoya Japan, (Mai 2009)
S. Schleicher, J. Lienhard, T. Speck, J. Knippers, und S. Poppinga. Principles and Development of Bio-inspired Materials, Proceedings of the COST Strategic Workshop, Vienna, Austria, BOKU – University of Natural Resources and Life Sciences, (13-15 April 2010)
J. Lienhard, S. Schleicher, J. Knippers, T. Speck, und S. Poppinga. Proceedings of the International Symposium of the International Association of Shell and Spatial Structures (IASS), Spatial Structures Temporary and Permanent, Shanghai, China, (2010)