Pragya Agarwal Yongjian Huang Vania Dimitrova Formal Approach to Reconciliation of Individual Ontologies for Personalisation of Geospatial Semantic Web. 195-210 2005 conf/geos/2005 GeoS http://dx.doi.org/10.1007/11586180_14 db/conf/geos/geos2005.html#AgarwalHD05