A characterization of perfect graphs. (English) Zbl 0241.05107


05C99 Graph theory
05C15 Coloring of graphs and hypergraphs
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[1] Berge, C., Färbung von Graphen, deren sämtliche bzw. deren ungerade Kreise starr sind, Wiss. Z. Martin-Luther-Univ. Halle-Wittenberg Math.-Natur. Reihe, 114 (1961)
[2] Fulkerson, D. R., Blocking and anti-blocking paris of polyhedra, (7th International Programming Symposium. 7th International Programming Symposium, The Hague (1970)) · Zbl 0254.90054
[3] L. LovászDiscrete Math.; L. LovászDiscrete Math.
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