More Reading Pad++: A Zooming Graphical Interface for Exploring Alternate Interface Physics Bederson and Hollan, Proc UIST 94 http://www.cs.umd.edu/hcil/pad++/papers/uist-94-pad/uist-94-pad.pdf Space-Scale Diagrams: Understanding Multiscale Interfaces George Furnas and Ben Bederson, Proc SIGCHI '95. http://www.cs.umd.edu/hcil/pad++/papers/chi-95-spacescale/chi-95-spacescale.pdf Speed-Dependent Automatic Zooming for Browsing Large Documents Takeo Igarashi and Ken Hinckley, Proc. UIST'00, pp. 139-148. http://www-ui.is.s.u-tokyo.ac.jp/~takeo/papers/uist2000.pdf Smooth and Efficient Zooming and Panning. Jarke J. van Wijk and Wim AA Nuij. Proc InfoVis 2003. http://www.win.tue.nl/~vanwijk/zoompan.pdf 19