1. The Art Gallery Theorem: Its Variations, Applications and Algorithmic Aspects;Aggarwal,1984
2. An algorithm for constructing regions with rectangles: Independence and minimum generating sets for collections of intervals;Franzblau,1984
3. Computers and Intractibility: A Guide to the Theory of NP-Completeness;Garey,1979
4. Algorithmic Graph Theory and Perfect Graphs;Golumbic,1980
5. The ellipsoid method and its consequences in combinatorial optimization;Grötschel;Combinatorica,1981