Coevolutionary dynamics of opinion propagation and social balance: The key role of small-worldnessYan Chen, Lixue Chen, Xian Sun, Kai Zhang, Jie Zhang and Ping LiEur. Phys. J. B, 87 3 (2014) 62DOI: https://doi.org/10.1140/epjb/e2014-41008-7