J. Schlaich, and J. Knippers. Structural Engineering International - Official Journal of the International Association for Bridge and Structural Engineering, 10 (1):
50 – 53(2000)
A. Körner, A. Mader, S. Saffarian, and J. Knippers. Acadia 2016 Posthuman Frontiers: Data, Designers, and Cognitive Machines, page 270-279. Ann Arbor, Michigan, USA, (September 2016)