@incollection{Guar01,
        title = {An Overview of OntoClean},
        author = {Nicola Guarino and Christopher A. Welty},
        booktitle = {Handbook on Ontologies},
        editor = {S. Staab and R. Studer},
        pages = {151-159},
        publisher = {Springer Verlag},
        year = 2004,
        biburl = {http://www.bibsonomy.org/bibtex/2eace865f9f56a2eb372b2a69eb9abf9f/berrueta},
	keywords = {ontoclean ontology turruta-eswc2008},
    }