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The importance of being Euler. (English) Zbl 0294.05105

MSC:
05C10 Planar graphs; geometric and topological aspects of graph theory
05C35 Extremal problems in graph theory
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References:
[1] H. Fleischner, The uniquely embeddable planar graphs, Discrete Mathematics 4 (1973) 347–358. · Zbl 0253.05110
[2] F. Harary, Graph Theory, Addison-Wesley, Reading, Mass., 1971.
[3] A. Kotzig, Eulerian Lines in Finite 4-Valent Graphs and Their Transformations, Theory of Graphs, Proc. Colloq. Tihany, 1966 (P. Erdös, G. Katona, editors), Academic Press, 1968. · Zbl 0158.20902
[4] A. Kotzig The Construction of the Hamiltonian Graphs of Degree Three (Russian), Čas. pěst. mat.87 (1962), 148–167.
[5] O. Ore, The Four-Color Problem, Academic Press, New York, London 1967. · Zbl 0149.21101
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