1. Piecewise-linear interpolation between polygonal slices
2. A mark-based interaction paradigm for free-hand drawing
3. J. Bloomenthal and B. Wyvill . Interactive techniques for implicit modeling. 1990 Symposium on Interactive 3D Graphics , pages 109 -- 116 , 1990 . J. Bloomenthal and B. Wyvill. Interactive techniques for implicit modeling. 1990 Symposium on Interactive 3D Graphics, pages 109--116, 1990.
4. J.M. Cohen , L. Markosian , R.C. Zeleznik , J.F. Hughes , and R. Barzel . An Interface for Sketching 3D Curves. 1999 Symposium on Interactive 3D Graphics , pages 17 -- 21 , 1999 . J.M. Cohen, L. Markosian, R.C. Zeleznik, J.F. Hughes, and R. Barzel. An Interface for Sketching 3D Curves. 1999 Symposium on Interactive 3D Graphics, pages 17--21, 1999.
5. Texture mapping for cel animation