Subject
Discrete Mathematics and Combinatorics
Reference14 articles.
1. Combinatorial structure on triangulations. I. The structure of four colorings;Fisk;Adv. Math.,1973
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3. Conjecture 6;Grünbaum,1969
4. On the four-colour map theorem;Heawood;Quart. J. Math.,1897
5. Graph Coloring Problems;Jensen,1995
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