F. Figueiredo, B. Ribeiro, J. Almeida, and C. Faloutsos. International Conference on World Wide Web, page 695--706. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2016)
V. Gruhn, and T. Richter. Proceedings of the 2008 Seventh International Conference on Grid and Cooperative Computing, page 753--764. IEEE Computer Society, (2008)