1. The floodlight problem;Bose,1993
2. Optimal floodlight illumination in polynomial time;Czyzowicz,1993
3. Optimal floodlight illumination of orthogonal art galleries;Estivill-Castro,1994
4. Computational Geometry in C;O'Rourke,1994
5. Illumination of polygons with 90° vertex lights;O'Rourke,1994