@inproceedings{TUW-140561, author = {Hoang, Huu Hanh and Tjoa, A Min}, title = {The State of the Art of Ontology-based Query Systems: A Comparison of Existing Approaches}, booktitle = {Proceedings of the IEEE International Conference on Computing {\&} Informatics}, year = {2006}, numpages = {6}, eid = {99}, note = {Vortrag: ICOCI06 - The IEEE International Conference on Computing {\&} Informatics, Malaysia; 2006-06-06 -- 2006-06-08} }