S. M.Gargari, и S. Oguducu. Proceedings of the 2012 International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2012), стр. 827--834. Washington, DC, USA, IEEE Computer Society, (2012)
M. Noll, C. man Au Yeung, N. Gibbins, C. Meinel, и N. Shadbolt. Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, стр. 612--619. New York, NY, USA, ACM, (2009)