1. Chromatic graph theory;Chartrand,2008
2. The sigma chromatic number of a graph;Chartrand;Graphs and combinatorics.,2010
3. Sigma Partitioning: Complexity and Random Graphs;Dehghan;Discrete Mathematics & Theoretical Computer Science,2018
4. The circular chromatic index of Goldberg snarks;Ghebleh;Discrete Mathematics,2007
5. Construction of class 2 graphs with maximum vertex degree 3;Goldberg;Journal of Combinatorial Theory, Series B,1981