L. Barkhuus, B. Brown, M. Bell, S. Sherwood, M. Hall, und M. Chalmers. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, Seite 497--506. New York, NY, USA, ACM, (2008)
A. Java, X. Song, T. Finin, und B. Tseng. WebKDD/SNA-KDD '07: Proceedings of the 9th WebKDD and 1st SNA-KDD 2007 workshop on Web mining and social network analysis, Seite 56--65. New York, NY, USA, ACM, (2007)
R. Hetherington, J. Bonar-Law, T. Fleet, und L. Parkinson. VIS '08: Proceedings of the 2008 International Conference Visualisation, Seite 99--105. Washington, DC, USA, IEEE Computer Society, (2008)