Paul Buitelaar Philipp Cimiano Peter Haase Michael Sintek Towards Linguistically Grounded Ontologies. 111-125 2009 ESWC http://dx.doi.org/10.1007/978-3-642-02121-3_12 conf/esws/2009 db/conf/esws/eswc2009.html#BuitelaarCHS09