@article{eprints1109,
          number = {3},
           month = {September},
          volume = {74},
            year = {2006},
           title = {Preferential attachment in the growth of social networks: the internet encyclopedia Wikipedia},
          author = {Andrea Capocci and Vito D. P. Servedio and Francesca Colaiori and Luciana Buriol and Debora Donato and Stefano Leonardi and Guido Caldarelli},
       publisher = {American Physical Society},
            note = {{\copyright} 2006 American Physical Society},
         journal = {Physical Review E},
        abstract = {We present an analysis of the statistical properties and growth of the free on-line encyclopedia Wikipedia. By describing topics by vertices and hyperlinks between them as edges, we can represent this encyclopedia as a directed graph. The topological properties of this graph are in close analogy with those of the World Wide Web, despite the very different growth mechanism. In particular, we measure a scale-invariant distribution of the in and out degree and we are able to reproduce these features by means of a simple statistical model. As a major consequence, Wikipedia growth can be described by local rules such as the preferential attachment mechanism, though users, who are responsible of its evolution, can act globally on the network.},
             url = {http://eprints.imtlucca.it/1109/},
        keywords = {PACS: 89.75.Hc; 89.75.Da; 89.75.Fb}
}