1. Angelier, P., Pocchiola, M.: CGAL-based implementation of visibility complexes. Technical Report ECG-TR-241207-01, Effective Computational Geometry for Curves and Surfaces (ECG) (2003)
2. Brönnimann, H., Devillers, O., Dujmovic, V., Everett, H., Glisse, M., Goaoc, X., Lazard, S., Na, H.-S., Whitesides, S.: Lines and free line segments tangent to arbitrary three-dimensional convex polyhedra. SIAM Journal on Computing 37(2), 522–551 (2007)
3. CGAL: Computational Geometry Algorithms Library, http://www.cgal.org
4. The CORE library, http://cs.nyu.edu/exact/
5. Demouth, J.: Événements visuels et limites d’ombres. PhD thesis, Université Nancy 2 (to appear, 2008)