SHIBASAKI, R. A Mobile User Interface for 3D Spatial Database Based on the Fusion of Live Landscape Imagery. International Workshop on Urban Multi-Media/3D Mapping (UM3 '98), June. 1998, 23-30
REKIMOTO, J. The World through the Computer : Computer Augmented Interaction with Real World Environments. User Interface Software and Technology (UIST'95). 1995