The following publications are possibly variants of this publication:
- On 3-colorable planar graphs without short cyclesMin Chen, Weifan Wang. appml, 21(9):961-965, 2008. [doi]
- Three-coloring planar graphs without short cyclesMin Chen, André Raspaud, Weifan Wang. ipl, 101(3):134-138, 2007. [doi]
- On the 3-colorability of planar graphs without 4-, 7- and 9-cyclesHuajing Lu, Yingqian Wang, Weifan Wang, Yuehua Bu, Mickaël Montassier, André Raspaud. DM, 309(13):4596-4607, 2009. [doi]
- The 3-colorability of planar graphs without cycles of length 4, 6 and 9Ying-li Kang, Ligang Jin, Yingqian Wang. DM, 339(1):299-307, 2016. [doi]