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"On the Homogeneous Model of Euclidean Geometry [Extended Version]", An extended version of the previous entry with extra background, details, and exercises.
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“Ribbon Edges: A New Impulse for Geometric Sculpture”, Proceedings of Bridges Conference 2010, July 24-28, Pecs, Hungary, pp. 403-406
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“ The Borromean Rings: A Video about the new IMU Logo”, with John Sullivan, Proceedings of Bridges Conference 2008, Leeuwarden, Netherlands, pp. 63-71
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"Not Knot", technical director, (16-minute computer-generated animation),published by Jones and Bartlett, Boston, 1991. Award of Distinction, Prix Ars Electronica, Linz 1992.