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Optimal on-line coloring of circular arc graphs Maciej Ślusarek (1995) RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
Optimal sequential and parallel algorithms for cut vertices and bridges on trapezoid graphs. Chen, Hon-Chan (2004) Discrete Mathematics and Theoretical Computer Science. DMTCS [electronic only]
Ordered vertex partitioning. McConnell, Ross M., Spinrad, Jeremy P. (2000) Discrete Mathematics and Theoretical Computer Science. DMTCS [electronic only]
Orthogonal drawings of plane graphs without bends. Rahman, Md.Saidur, Nishizeki, Takao, Naznin, Mahmuda (2003) Journal of Graph Algorithms and Applications
Orthogonal hypergraph drawing for improved visibility. Eschbach, Thomas, Guenther, Wolfgang, Becker, Bernd (2006) Journal of Graph Algorithms and Applications