L. Bing, R. Guo, W. Lam, Z. Niu, и H. Wang. Proceedings of the 37th International ACM SIGIR Conference on Research &\#38; Development in Information Retrieval, стр. 767--776. New York, NY, USA, ACM, (2014)
M. McCord, и M. Chuah. Proceedings of the 8th International Conference on Autonomic and Trusted Computing, стр. 175--186. Berlin, Heidelberg, Springer-Verlag, (2011)