1. Färbung von Graphen, deren sämtliche bzw. deren ungerade Kreise starr sind;Berge;Wiss. Z. Martin-Luther-Univ. Halle-Wittenberg Math.-Natur. Reihe,1961
2. A note on even pairs;Bertschi;Discrete Math.,1987
3. The strong perfect graph theorem;Chudnovsky;Ann. of Math.,2006
4. Star-cutsets and perfect graphs;Chvátal;J. Combin. Theory Ser. B,1985
5. Even pairs;Everett,2001