HYGROSHELL – In Situ Self-shaping of Curved Timber Shells. In Kathrin Dörfler, Jan Knippers, Achim Menges, Stefana Parascho, Helmut Pottmann, and Thomas Wortmann (Eds.), Advances in Architectural Geometry 2023, 43-54, De Gruyter, Oct 4, 2023. [PUMA: 2023 architecture curved hygroshell itke kiesewetter knippers körner menges self-shaping shell situ takahashi timber wood]