@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}
}
@inbook {panagiotopoulos2012ontological,
	title = {An Ontological Approach for Domain Knowledge Modeling and Management in E-Learning Systems},
	booktitle = {Artificial Intelligence Applications and Innovations},
	year = {2012},
	pages = {95{\textendash}104},
	publisher = {Springer},
	organization = {Springer},
	author = {Panagiotopoulos, Ioannis and Kalou, Aikaterini and Christos J. Pierrakeas and Kameas, Achilles}
}
@inbook {panagiotopoulos2012ontology,
	title = {An Ontology-Based Model for Student Representation in Intelligent Tutoring Systems for Distance Learning},
	booktitle = {Artificial Intelligence Applications and Innovations},
	year = {2012},
	pages = {296{\textendash}305},
	publisher = {Springer Berlin Heidelberg},
	organization = {Springer Berlin Heidelberg},
	author = {Panagiotopoulos, Ioannis and Kalou, Aikaterini and Christos J. Pierrakeas and Kameas, Achilles}
}
