Y. Hassan-Montero, and V. Herrero-Solana. Proceedings of Multidisciplinary Information Sciences and Technologies, InSciT2006, Merida, Spain, (25--28 October 2006)
M. Hearst, and D. Rosner. HICSS '08: Proceedings of the Proceedings of the 41st Annual Hawaii International Conference on System Sciences, page 160. Washington, DC, USA, IEEE Computer Society, (2008)
S. Ahern, M. Naaman, R. Nair, and J. Yang. JCDL '07: Proceedings of the 7th ACM/IEEE-CS joint conference on Digital libraries, page 1-10. New York, NY, USA, ACM, (2007)