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"Plane graphs without cycles of length 4, 6, 7 or 8 are 3-colorable."
Yingqian Wang, Ming Chen, Liang Shen (2008)
- Yingqian Wang
, Ming Chen, Liang Shen:
Plane graphs without cycles of length 4, 6, 7 or 8 are 3-colorable. Discret. Math. 308(17): 4014-4017 (2008)
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