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)
M. Budde, R. El Masri, T. Riedel, und M. Beigl. Proceedings of the 12th International Conference on Mobile and Ubiquitous Multimedia, Seite 19. ACM, (2013)
R. Rana, C. Chou, S. Kanhere, N. Bulusu, und W. Hu. Proceedings of the 9th ACM/IEEE International Conference on Information Processing in Sensor Networks, Seite 105--116. ACM, (2010)