Chi-Cheng Peter Chu Jianzhong Mo Rajit Gadh A Quantitative Analysis on Virtual Reality-Based Computer Aided Design System Interfaces. 216-223 2002 2 J. Comput. Inf. Sci. Eng. 3 http://ojps.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JCISB6000002000003000216000001&idtype=cvips&gifs=Yes db/journals/jcise/jcise2.html#ChuMG02