A. Patil, S. Oundhakar, A. Sheth, und K. Verma. Proceedings of the Thirteenth International World Wide Web Conference (WWW2004), New York, USA, LSDIS Lab, University of Georgia, (17-22 May 2004)
O. Ezenwoye, und S. Masoud Sadjadi. FIU-SCIS-2006-06-01. School of Computing and Information Sciences, Florida International University, 11200 SW 8th St., Miami, FL 33199, (Juni 2006)