A new proof of 3-colorability of Eulerian triangulations - Tsai, Mu-Tsun (Ars mathematica contemporanea, 2011)
Keywords: 3-colorable; 3-pobarljivost; eulerian circuit; Eulerjev cikel; graph theory; Heawoodov izrek; Heawood's theorem; plane triangulation; ravninska triangulacija; teorija grafov