@incollection{pottmann-2016-ma,
	title = "Geometry and freeform architecture",
	author = "Helmut Pottmann and Johannes Wallner",
	year = 2016,
	booktitle = "Mathematics and Society",
	editor = "Wolfgang K{\"o}nig",
	publisher = "EMS",
	isbn = "978-3-03719-164-4",
	doi = "http://dx.doi.org/10.4171/164",
	pages = "131-151",
}