ChangHoon Park TaeSeok Jin Michitaka Hirose Heedong Ko A Framework for VR Application Based on Spatial, Temporal and Semantic Relationship. 329-337 2007 conf/hci/2007-14 HCI (14) http://dx.doi.org/10.1007/978-3-540-73335-5_36 db/conf/hci/hci2007-14.html#ParkJHK07