Hybrid shadow testing scheme for ray tracing

An updated cross-indexed guide to the ray-tracing literature

ACM SIGGRAPH Computer Graphics

A Survey of Shadow Algorithms

IEEE Computer Graphics and Applications

Guarding curvilinear art galleries with edge or mobile guards

Proceedings of the 2008 ACM symposium on Solid and physical modeling

Guarding curvilinear art galleries with vertex or point guards

Computational Geometry: Theory and Applications

Guarding curvilinear art galleries with edge or mobile guards via 2-dominance of triangulation graphs

Computational Geometry: Theory and Applications