T. Anderson, and J. Dron. Handbook of Research on Social Software and Developing Community Ontologies, page 1-17. Information Science Reference, (2009)
E. Bakshy, I. Rosenn, C. Marlow, and L. Adamic. Proceedings of the 21st International Conference on World Wide Web, page 519--528. New York, NY, USA, ACM, (2012)
U. Brandes, P. Kenis, J. Lerner, and D. van Raaij. WWW '09: Proceedings of the 18th international conference on World wide web, page 731--740. New York, NY, USA, ACM, (2009)
A. Budura, S. Michel, P. Cudré-Mauroux, and K. Aberer. 6th Annual European Semantic Web Conference (ESWC2009), volume 5554 of Lecture Notes in Computer Science, page 608-622. Springer, (June 2009)