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"Planar graphs without cycles of length 4, 5, 8, or 9 are 3-choosable."
Yingqian Wang, Huajing Lu, Ming Chen (2010)
- Yingqian Wang, Huajing Lu, Ming Chen:
Planar graphs without cycles of length 4, 5, 8, or 9 are 3-choosable. Discret. Math. 310(1): 147-158 (2010)
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