R. White, M. Bilenko, und S. Cucerzan. Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, Seite 159--166. ACM, (2007)
P. Singer, D. Helic, A. Hotho, und M. Strohmaier. International Conference on World Wide Web, Seite 1003--1013. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2015)
T. Yan, D. Chu, D. Ganesan, A. Kansal, und J. Liu. International Conference on Mobile Systems, Applications, and Services, Seite 113--126. New York, NY, USA, ACM, (2012)