URN:NBN:SI:doc-XZ9CTQU42011Tsai, Mu-TsunWest, Douglas Brentdocuments/casopisje/ars-mathematica-contemporanea/16262745a.pdfdocuments/doc/X/URN_NBN_SI_doc-XZ9CTQU4_001.pdfdocuments/doc/X/URN_NBN_SI_doc-XZ9CTQU4_001.txt14articlestr. 73-77162627451855-3966URN:NBN:SI:doc-XZ9CTQU4engDruštvo matematikov, fizikov in astronomov SlovenijeArs mathematica contemporaneaBY3-colorable3-pobarljivosteulerian circuitEulerjev cikelgraph theoryHeawoodov izrekHeawood's theoremplane triangulationravninska triangulacijateorija grafovA new proof of 3-colorability of Eulerian triangulations