1. Gjoka M, Kurant M, Butts CT, Markopoulou A (2011) Practical recommendations on crawling online social networks. IEEE J Select Areas Commun 29(9):1872–1892
2. Haewoon K, Changhyun L, Hosung P, Sue M (2010) What is twitter, a social network or a news media? In: Proceedings of the 19th International Conference on World Wide Web, pp 591–600
3. Lubos T, Michal Z (2012) Data analysis in public social networks. In: International Scientific Conference and International Workshop Present Day Trends of Innovations, Volume 1
4. Lars B, Dan H, Jon K, Xiangyang L (2006) Group formation in large social networks: membership, growth, and evolution. In: Proceedings of the 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, pp 44–54
5. Leskovec J, Lang KJ, Dasgupta A, Mahoney MW (2009) Community structure in large networks: natural cluster sizes and the absence of large well-defined clusters. Intern Math 6(1):29–123