Mahoro Anabuki Hiroshi Ishii AR-Jig: A Handheld Tangible User Interface for Modification of 3D Digital Form via 2D Physical Curve. 55-66 2007 ISMAR http://dx.doi.org/10.1109/ISMAR.2007.4538826 conf/ismar/2007 db/conf/ismar/ismar2007.html#AnabukiI07