W. Xi, E. Fox, W. Fan, B. Zhang, Z. Chen, J. Yan, и D. Zhuang. SIGIR '05: Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval, стр. 130--137. New York, NY, USA, ACM, (2005)
Q. Chen, H. Chang, R. Govindan, и S. Jamin. INFOCOM 2002. Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE, 2, стр. 608--617. (2002)