P. Singer, F. Lemmerich, R. West, L. Zia, E. Wulczyn, M. Strohmaier, and J. Leskovec. Proceedings of the 26th International Conference on World Wide Web, page 1591--1600. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2017)
F. Benevenuto, T. Rodrigues, M. Cha, and V. Almeida. Proceedings of the 9th ACM SIGCOMM Conference on Internet Measurement, page 49--62. New York, NY, USA, ACM, (2009)