1. A. Aggarwal, The art gallery theorem: its variations, applications, and algorithmic aspects, Ph.D. Thesis, Johns Hopkins University, 1984
2. An optimal algorithm for determining the visibility of a polygon from an edge;Avis;IEEE Transactions on Computers,1981
3. I. Bjorling-Sachs, D.L. Souvaine, A tight bound for edge guards in monotone polygons, DIMACS Technical Report 92-52, 1992
4. A combinatorial theorem in plane geometry;Chvátal;J. Combinatorial Theory, Series B,1997
5. A simple proof of the representation of bipartite planar graphs as the contact graphs of orthogonal straight line segments;Czyżowicz;Information Processing Letters,1998