Nicola Guarino Christopher A. Welty Christopher Partridge Towards Ontology-Based Harmonization of Web Content Standards. 1-6 http://link.springer.de/link/service/series/0558/bibs/1921/19210001.htm 2000 conf/er/2000w ER (Workshops) db/conf/er/erw2000.html#GuarinoWP00