Hyunyoung Song François Guimbretière Michael A. Ambrose Carl Lostritto CubeExplorer: An Evaluation of Interaction Techniques in Architectural Education. 43-56 2007 conf/interact/2007-2 INTERACT (2) http://dx.doi.org/10.1007/978-3-540-74800-7_4 db/conf/interact/interact2007-2.html#SongGAL07