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"Contraction obstructions for treewidth."
Fedor V. Fomin, Petr A. Golovach, Dimitrios M. Thilikos (2011)
- Fedor V. Fomin, Petr A. Golovach, Dimitrios M. Thilikos:
Contraction obstructions for treewidth. J. Comb. Theory B 101(5): 302-314 (2011)
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