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"Large Faces in 4-Critical Planar Graphs with Minimum Degree 4."
H. L. Abbott, Donovan R. Hare, Bing Zhou (1995)
- H. L. Abbott, Donovan R. Hare, Bing Zhou:
Large Faces in 4-Critical Planar Graphs with Minimum Degree 4. Comb. 15(4): 455-467 (1995)
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