Discussiones Mathematicae Graph Theory > 2009 > 29 > 2 > 385-400
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journal ISSN : | 2083-5892 |
DOI | 10.7151/dmgt.1454 |
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Bibliography
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[1] O.V. Borodin, Solution of Kotzig-Grünbaum problems on separation of a cycle in planar graphs (Russian), Mat. Zametki 46 (1989) 9-12; translation in Math. Notes 46 (1989) 835-837, doi: 10.1007/BF01139613.
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[2] O.V. Borodin, Solution of the Ringel problem on vertex-face coloring of planar graphs and coloring of 1-planar graphs, Metody Diskret. Analiz. 41 (1984) 12-26 (in Russian).
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[3] O.V. Borodin, A new proof of the 6 color theorem, J. Graph Theory 19 (1995) 507-521, doi: 10.1002/jgt.3190190406.