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\bibitem{DellaPenna_etal2003} Giuseppe Della Penna, Antinisca Di Marco, Benedetto Intrigila, Igor Melatti, and Alfonso Pierantonio. "Xere: Towards a Natural Interoperability between XML and ER Diagrams." In \textit{Fundamental Approaches to Software Engineering, 6th International Conference, FASE 2003, Held as Part of the Joint European Conferences on Theory and Practice of Software, ETAPS 2003, Warsaw, Poland, April 7-11, 2003, Proceedings}, edited by M. Pezz{\~A}{\textasciidieresis}, 356--371. Lecture Notes in Computer Science 2621. Springer, 2003. ISSN: 3-540-00899-3. DOI: 10.1007/3-540-36578-8_25.

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