1. Zhu H, Siegel MD, Madnick SE. Information aggregation-A value-added E-service. http://ebusiness.mit.edu/research/papers/106%20SMadnick,%20Siegel%20Information%20Aggregation.pdf, Working Paper #106, 2001 [1 June 2001].
2. Madnick SE, Siegel MD. Seizing the opportunity: Exploiting web aggregation. http://ebusiness.mit.edu/research/papers/144%20Madnick,Aggregator.pdf, Working Paper #144, 2001 [7 December 2001].
3. High-Performance Information Aggregation Using XML-Based Operational Data Servers. http://www.zapthink.com/report.html?id=WP-0114 [1 May 2003].
4. Improving data quality through effective use of data semantics;Madnick;Data & Knowledge Engineering,2006