1. Semantic heterogeneity in multidatabase systems;Gaecia-Soloco,1996
2. Federated database systems for managing distributed heterogeneous, and autonomous databases;Sheth;ACM Computing Surveys,1990
3. Interoperability of multiple autonomous databases;Litwin;Computing Surveys,1990
4. Multidatabase interoperability;Breitbart;SIGMOD Record,1990
5. T. Bray, J. Paoli, C. Sperberg-McQueen (Eds.), Extensible Markup Language (XML) 1.0, February 1998, W3C Recommendation Available at http://www.w3.org/TR/1998/REC-xml-19980210.