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"The 3-colorability of planar graphs without cycles of length 4, 6 and 9."
Ying-li Kang, Ligang Jin, Yingqian Wang (2016)
- Ying-li Kang, Ligang Jin, Yingqian Wang:
The 3-colorability of planar graphs without cycles of length 4, 6 and 9. Discret. Math. 339(1): 299-307 (2016)
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