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Date: 2014-08-22 14:44:59Graph theory Graph coloring Planar graph Graph Ear decomposition Order theory Interval edge coloring | Planar 4-critical graphs with four triangles Oleg V. Borodin ∗ Zdenˇek Dvoˇra´k † Alexandr V. Kostochka Bernard Lidick´ y§Add to Reading ListSource URL: orion.math.iastate.eduDownload Document from Source WebsiteFile Size: 329,78 KBShare Document on Facebook |