1. Abiteboul S, Duschka OM. Complexity of answering queries using materialized views. In: Proceedings 17th ACM SIGACT-SIGMOD-SIGART symposium on principles of database systems. 1998. p. 254–63.
2. Carey MJ, Haas LM, Schwarz PM, Arya M, Cody WF, Fagin R, Flickner M, Luniewski A, Niblack W, Petkovic D, Thomas II J, Williams JH, Wimmers EL. Towards heterogeneous multimedia information systems: the garlic approach. In: Proceedings 5th international workshop on research issues on data engineering. 1995. p. 124–31.
3. Fagin R, Kolaitis PG, Miller RJ, Popa L. Data exchange: semantics and query answering. In: Proceedings international conference on database theory. 2002. p. 207–24.
4. Friedman M, Levy A, Millstein T. Navigational plans for data integration. In: Proceedings 16th national conference on AI and 11th innovative applications of AI conference. 1999.
5. Garcia-Molina HK, Papakonstantinou YK, Quass DK, Rajaraman AK, Sagiv YK, Ullman JK, Vassalos VK, Widom JK. The TSIMMIS approach to mediation: data models and languages. J Intell Inf Syst. 1997;8(2):117–32.