1. Computers and Intractability: A Guide to the Theory of NP-Completeness;Garey,1979
2. On the metric dimension of a graph;Harary;Ars Combin.,1976
3. C. Poisson, P. Zhang, The dimension of unicyclic graphs, J. Combin. Math. Combin. Comput., accepted.
4. Leaves of trees;Slater;Congr. Numer.,1975
5. Dominating and reference sets in a graph;Slater;J. Math. Phys. Sci.,1988