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"Helly theorems for 3-Steiner and 3-monophonic convexity in graphs."
Morten Hegner Nielsen, Ortrud R. Oellermann (2011)
- Morten Hegner Nielsen, Ortrud R. Oellermann:
Helly theorems for 3-Steiner and 3-monophonic convexity in graphs. Discret. Math. 311(10-11): 872-880 (2011)

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