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"Upward Embeddings and Orientations of Undirected Planar Graphs."
Walter Didimo, Maurizio Pizzonia (2003)
- Walter Didimo, Maurizio Pizzonia:
Upward Embeddings and Orientations of Undirected Planar Graphs. J. Graph Algorithms Appl. 7(2): 221-241 (2003)
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