1. Färbung von Graphen, deren sämtliche bzw deren ungerade Kreise starr sind;Berge,1961
2. Graphes;Berge,1985
3. C. Berge, A new color-change to improve the coloring of a graph, Rutcor Research Report, pp. 16–87.
4. Parity graphs;Burlet,1984
5. Perfect Graphs and Algorithmic Graph Theory;Golumbic,1980