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2. Knowledge sharing and yahoo answers: everyone knows something;Lada A Adamic;Proceedings of the 17th international conference on World Wide Web,2008
3. Tracking information epidemics in blogspace;Eytan Adar;The 2005 IEEE/WIC/ACM international conference on,2005
4. Reciprocity analysis of online learning networks;Reuven Aviv;Journal of Asynchronous Learning Networks,2005
5. Group formation in large social networks: membership, growth, and evolution;Lars Backstrom;Proceedings of the 12th ACM SIGKDD international conference on Knowledge discovery and data mining,2006