1. Resolvability in graphs and the metric dimension of a graph;Chartrand;Discrete Appl. Math.,2000
2. Graphs & Digraphs;Chartrand,2004
3. The directed distance dimension of oriented graphs;Chartrand;Math. Bohemica,2000
4. On the dimension of oriented graphs;Chartrand;Utilitas Math.,2001
5. I.K. Evans, Evolutionary algorithms for vertex cover, Evolutionary Programming VII, Proceeding of 7th International Conference EP98.