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"Planar graphs without chordal 6-cycles are 4-choosable."
Daiqiang Hu et al. (2018)
- Daiqiang Hu, Danjun Huang, Weifan Wang, Jian-Liang Wu
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Planar graphs without chordal 6-cycles are 4-choosable. Discret. Appl. Math. 244: 116-123 (2018)
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