- Proceedings of the National Academy of Sciences PNAS 104(5):1461--1464 (Jan 30, 2007)
- Rev. Mod. Phys. 81(2):591--646 (May 2009)
- The European Physical Journal C - Particles and Fields 46(0):33--37 (August 2006)
- WWW '07: Proceedings of the 16th international conference on World Wide Web, page 211--220. New York, NY, USA, ACM, (2007)


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