1. Asmiati, H. Assiyatun, E. T. Baskoro, Locating-chromatic number of Amalgamation of stars, ITB J. Sci. 43 A (1), 1–8 (2011).
2. Asmiati, E. T. Baskoro, H. Assiyatun, D. Suprijanto, R. Simanjuntak, S. Uttunggadewa, The Locating-Chromatic Number of Firecracker Graphs, Far East J. Math. Sci. 63:1, 11–23 (2012).
3. C. Barrientos, Difference Vertex Labellings, Ph. D. Thesis. Universitat Politècnica de Catalunya (2004).
4. Characterizing all trees with locating-chromatic number 3
5. G. Chartrand, D. Erwin, M. A. Henning, P.J. Slater, P. Zhang, The locating-chromatics number of a graph, Bull. Inst. Combin. Appl 36, 89–101 (2002).