1. Allen, F.W., Loomis, M.E.S., Mannino, M.V.: The integrated dictionary/directory system. ACM Comput. Surv. 14(2), 245–286 (1982)
2. Atzeni, P., Cappellari, P., Bernstein, P.A.: Modelgen: Model independent schema translation. In: ICDE, pp. 1111–1112. IEEE Computer Society, Los Alamitos (2005)
3. Atzeni, P., Ceri, S., Paraboschi, S., Torlone, R.: Databases: concepts, languages and architectures. McGraw-Hill, New York (1999)
4. Lecture Notes in Computer Science;P. Atzeni,1996
5. Atzeni, P., Torlone, R.: Mdm: a multiple-data-model tool for the management of heterogeneous database schemes. In: SIGMOD, pp. 291–301. ACM, New York (1997)