1. Pad++: a zooming graphical interface for exploring alternate interface physics;Bederson,1994
2. Cyberspace: some proposals;Benedikt,1991
3. CAD usage in an architectural office: from observations to active assistance;Bhavnani;Autom. Constr.,1996
4. F.P. Brooks Jr., Final Technical Report: Walkthrough Project. Technical Report TR92-026, Department of Computer Science, University of North Carolina, Chapel Hill, NC, 1992.
5. Browsing graphs using a fisheye view;Brown,1993