@inproceedings{Hahmann2006, author = {Lydia Hahmann}, title = {How stiff is a timber curved plank? Historical discussions about curved plank structures}, booktitle = {Proceedings of the Second International Congress on Construction History, Queens' College, Cambridge University 29th March - 2nd April, vol. 2.}, editor = {Malcolm Dunkeld}, pages = {1501 -- 1516}, year = {2006}, }