Journal of Combinatorial Theory Series B · 1978 · 13 citations · 4 references
Natural SciencesMathematicsColor TheoryGeometryColor ModelsGraph ColoringGraph TheoryGroup Theory
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George D. Birkhoff, Drew Lewis · Transactions of the American Mathematical Society · 1946 · 192 citations · Full text
George D. Birkhoff · American Journal of Mathematics · 1913 · 91 citations
Philip Franklin · American Journal of Mathematics · 1922 · 88 citations
Six-Rings in Minimal Five-Color Maps
Arthur Bernhart · American Journal of Mathematics · 1947 · 11 citations