1. GIVEN: Gesture driven interactions in virtual environments, a toolkit approach to 3D interactions;Böhm,1992
2. Facing interface issues;Brill;Comp. Graph. World,1992
3. Survey of virtual environment technologies and techniques;Bryson;Course Notes 9, SIGGRAPH '92,1992
4. Precise object interactions using solid modeling techniques;Figueiredo,1993
5. The human factors of computer graphics interaction techniques;Foley;IEEE Comp. Graph. Appl.,1984