Jun Shen Aneesh Krishna Shuai Yuan Ke Cai Yuemin Qin A Pragmatic GIS-Oriented Ontology for Location Based Services. 562-569 2008 Australian Software Engineering Conference http://doi.ieeecomputersociety.org/10.1109/ASWEC.2008.5 conf/aswec/2008 db/conf/aswec/aswec2008.html#ShenKYCQ08