1. T. Berners-Lee, J. Hendler, and O. Lassila. The semantic web. Scientific American, May 2001.
2. T. R. Gruber. Towards principles for the design of ontologies used for knowledge sharing. In International workshop on formal ontology in conceptual analysis and knowledge representation, 1993.
3. H. S. Pinto and A. G. Perz. Software architecture of SETA, an adaptive Web store shell. In Proceedings of the IJCAI-99 workshop on Ontologies and Problem-Solving Methods(KRR5), August 1999.
4. D. Calvanes, G. D. Giacomo, and M. Lenzerini. A framework for ontology integration. In Proc of the International Semantic Web Conference, 2001.
5. A. Doan, J. Mahadevan, P. Domingos, and A. Halevy. Learning to map between ontologies on the semantic web. In Online Proceedings of the 11th World Wide Web Conference (WWW2002), pages 662–673, 2002.