Opinion dynamics on directed small-world networks L.-L. Jiang, D.-Y. Hua, J.-F. Zhu, B.-H. Wang and T. Zhou Eur. Phys. J. B, 65 2 (2008) 251-255 Published online: 10 September 2008 DOI: 10.1140/epjb/e2008-00342-3