References
- G. Chartrand and L. Lesniak, Graphs & Digraphs: Fourth Edition. Chapman & Hall/CRC, Boca Raton, FL (2004).
- S.M. Hedetniemi, S.T. Hedetniemi, and P. Kristiansen, Alliances in graphs, J. Combin. Math. Combin. Comput, 48 (2004), 157–177.
- P. Kristiansen, S.M. Hedetniemi, and S.T. Hedetniemi, Introduction to alliances in graphs, Proc. 17th Internat. Symp. Comput. Inform. Sci. (I. Cicekli, N.K. Cicekli, and Gelenbe, Eds.). ISCIS xvii, October 28-30, 2002, Orlando, FL, CRC Press, pp. 308–312.