1. Blondel, V. D., Guillaume, J. L., Lambiotte, R., & Lefebvre, E. (2008). Fast unfolding of communities in large networks. arXiv.org Physics, arXiv: 0803.0476.
2. Brown, C., Nicosia, V., Scellato, S., Noulas, A., & Mascolo, C. (2012a). The importance of Being placefriends: Discovering location-focused online communities. WOSN ’12, August 17, 2012, Helsinki, Finland.
3. Brown, C., Nicosia, V., Scellato, S., Noulas, A., & Mascolo, C. (2012b, May). Where online friends meet: Social communities in location-based networks. In Sixth International AAAI Conference on Weblogs and Social Media.
4. Cho, E., Myers, S. A., & Leskovec, J. (2011). Friendship and mobility: User movement in location-based social networks. In ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD). San Diego, California, USA.
5. Davis, A., & Gardner, B. D. (1941). Deep South. Chicago: The University of Chicago Press.