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Algorithms for incremental orthogonal graph drawing in three dimensions. Papakostas, Achilleas; Tollis, Ioannis G. — 1999 Journal of Graph Algorithms and Applications
Techniques for the refinement of orthogonal graph drawings. Six, Janet M.; Kakoulis, Konstantinos G.; Tollis, Ioannis G. — 2000 Journal of Graph Algorithms and Applications