Alexander Borgida Luciano Serafini Distributed Description Logics: Directed Domain Correspondences in Federated Information Sources. 36-53 2002 conf/coopis/2002 CoopIS/DOA/ODBASE http://link.springer.de/link/service/series/0558/bibs/2519/25190036.htm db/conf/coopis/coopis2002.html#BorgidaS02