@techreport { dolog-03c,
	title = {Role-Oriented Models for Hypermedia Construction –- Conceptual Modeling for the Semantic Web},
	year = {2003},
	month = {feb},
	institution = {Learninglab Lower Saxony, University of Hannover},
	type = {Technical Report},
	author = {Heidrun Allert and Peter Dolog and Wolfgang Nejdl and Wolf Siberski and Friedrich Steimann}
}