1. Graph Theory with Applications;Bondy,1976
2. On colouring the nodes of a network;Brooks,1941
3. Embedding graphs and coloring graphs under extremal degree conditions;Catlin,1976
4. Brooks' graph-coloring theorem and the independence number;Catlin;J. Combin. Theory Ser. B,1979
5. The point arboricity of a graph;Chartrand;Israel J. Math.,1968