W. Tantisiriroj, S. Son, S. Patil, S. Lang, G. Gibson, and R. Ross. Proceedings of 2011 International Conference for High Performance Computing, Networking, Storage and Analysis, page 67:1--67:12. New York, NY, USA, ACM, (2011)
B. Sigurbjörnsson, and R. van Zwol. WWW '08: Proceeding of the 17th international conference on World Wide Web, page 327--336. New York, NY, USA, ACM, (2008)