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Graphs with Large Girth Not Embeddable in the Sphere
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- Journal:
- Combinatorics, Probability and Computing / Volume 16 / Issue 6 / November 2007
- Published online by Cambridge University Press:
- 01 November 2007, pp. 829-832
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The Minimum Feedback Arc Set Problem is NP-Hard for Tournaments
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- Journal:
- Combinatorics, Probability and Computing / Volume 16 / Issue 1 / January 2007
- Published online by Cambridge University Press:
- 20 September 2006, pp. 1-4
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