Appel, K.; Haken, W. Every planar map is four colorable. (English) Zbl 0331.05106 Bull. Am. Math. Soc. 82, 711-712 (1976). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 4 ReviewsCited in 97 Documents MSC: 05C15 Coloring of graphs and hypergraphs PDF BibTeX XML Cite \textit{K. Appel} and \textit{W. Haken}, Bull. Am. Math. Soc. 82, 711--712 (1976; Zbl 0331.05106) Full Text: DOI OpenURL References: [1] . F. Allaire and E. R. Swart, A systematic approach to the determination of reducible configurations, J. Combinatorial Theory Ser. B (to appear). · Zbl 0398.05034 [2] K. Appel and W. Haken, The existence of unavoidable sets of geographically good configurations, Illinois J. Math. 20 (1976), no. 2, 218 – 297. · Zbl 0322.05141 [3] Heinrich Heesch, Untersuchungen zum Vierfarbenproblem, B. I. Hochschulskripten, vol. 810/810, Bibliographisches Institut, Mannheim-Vienna-Zürich, 1969 (German). · Zbl 0187.20904 [4] Hassler Whitney and W. T. Tutte, Kempe chains and the four colour problem, Utilitas Math. 2 (1972), 241 – 281. · Zbl 0253.05120 This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. It attempts to reflect the references listed in the original paper as accurately as possible without claiming the completeness or perfect precision of the matching.