R. Devooght, A. Mantrach, I. Kivimäki, H. Bersini, A. Jaimes, and M. Saerens. Proceedings of the 23rd International Conference on World Wide Web, page 213--224. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2014)
P. Singer, T. Niebler, M. Strohmaier, and A. Hotho. Proceedings of the 22nd international conference on World Wide Web companion, page 171--172. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2013)
D. Helic, C. Trattner, M. Strohmaier, and K. Andrews. Proceedings of the 2010 IEEE Second International Conference on Social Computing, page 161--168. Washington, DC, USA, IEEE Computer Society, (2010)