@Inproceedings{erdmann2000aeafmoir, author = "Michael Erdmann and Stefan Decker and Steffen Staab and Alexander Maedche", booktitle = "Proc. of First Workshop on the Semantic Web at the Fourth European Conference International Workshop on Research and Advanced Technology for Digital Libraries, Lisbon, Portugal 18-20 September 2000", month = "September", title = "An extensible approach for Modeling Ontologies in RDF(S)", year = "2000", }