TY - CONF T1 - Understanding Multi-touch Manipulation for Surface Computing T2 - INTERACT '09: Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction Y1 - 2009 A1 - North, Chris A1 - Dwyer, Tim A1 - Lee, Bongshin A1 - Fisher, Danyel A1 - Isenberg, Petra A1 - Robertson, George A1 - Inkpen, Kori JF - INTERACT '09: Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction PB - Springer-Verlag CY - Berlin, Heidelberg SN - 978-3-642-03657-6 ER -