Sebastian Knödel, Martin Hachet. Multi-touch RST in 2D and 3D spaces: Studying the impact of directness on user performance. In Joseph J. LaViola Jr., Martin Hachet, Mark Billinghurst, editors, IEEE Symposium on 3D User Interfaces, 3DUI 2011, Singapore, 19-20 March, 2011. pages 75-78, IEEE, 2011. [doi]
Abstract is missing.