R. Jäschke, A. Hotho, C. Schmitz, и G. Stumme. Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), том 4604 из Lecture Notes in Artificial Intelligence, стр. 283--295. Berlin, Heidelberg, Springer-Verlag, (июля 2007)
M. Heckner, T. Neubauer, и C. Wolff. SSM '08: Proceeding of the 2008 ACM workshop on Search in social media, стр. 3--10. New York, NY, USA, ACM, (2008)
O. Nov, M. Naaman, и C. Ye. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, стр. 1097--1100. New York, NY, USA, ACM, (2008)
J. Leskovec, L. Backstrom, R. Kumar, и A. Tomkins. KDD '08: Proceeding of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining, стр. 462--470. New York, NY, USA, ACM, (2008)