Mark van Assem Maarten R. Menken Guus Schreiber Jan Wielemaker Bob J. Wielinga 17-31 https://doi.org/10.1007/978-3-540-30475-3_3 https://orkg.org/orkg/resource/R142570 https://www.wikidata.org/entity/Q125462955 2004 conf/semweb/2004 ISWC db/conf/semweb/iswc2004.html#AssemMSWW04