@conference {pierrakeas2013correlation, title = {A correlation verb (CorrVerb) ontology for object properties specification within knowledge domain representations}, booktitle = {Proceedings of the 6th Balkan Conference in Informatics}, year = {2013}, pages = {195{\textendash}200}, publisher = {ACM}, organization = {ACM}, author = {Christos J. Pierrakeas and Panagiotopoulos, Ioannis and Kameas, Achilles} }