@conference {Kleinermann2007a, title = {Using Semantic Annotations for Customizing Navigation Paths and Virtual Tour Guides for Virtual Environments}, booktitle = {Proceedings of the 4th International Intuition Conference}, year = {2007}, publisher = {INTUITION}, organization = {INTUITION}, address = {Athens, Greece}, author = {F. Kleinermann and O. De Troyer and C. Creelle and B. Pellens} }