@inproceedings{kratz2011capwidgets,
	Author = {Sven Kratz and Tilo Westermann and Michael Rohs and Georg Essl},
	Booktitle = {Work in Progress, CHI 2011, Vancouver, Canada, May 7-12, 2011},
	Month = {may},
	Title = {CapWidgets: Tangible Widgets versus Multi-Touch Controls on Mobile Devices},
	Year = {2011}
	}