1. Färbung von Graphen, deren sämtliche bzw. deren ungerade Kreise starr sind;Berge,1961
2. Strongly perfect graphs;Berge;Ann. Discr. Math.,1984
3. On the complexity of testing for odd holes and induced odd paths;Bienstock;Discr. Math.,1991
4. On the complexity of testing for odd holes and induced odd paths;Bienstock;Discr. Math.,1992
5. Star-cutsets and perfect graphs;Chvátal;J. Combin. Theory, Ser. B,1985