De Troyer, O., Bille, W., Kleinermann, F.: "Defining the Semantics of Conceptual Modeling Concepts for 3D Complex Objects in Virtual Reality", Journal on Data Semantics XIV, LNCS 5880, pp. 1-36, Eds. S. Spaccapietra, L. Delcambre, Publ. Springer-Verlag Berlin Heidelberg (2009)

De Troyer, O., Kleinermann, F., Pellens, B., Bille, W.: "Conceptual Modeling for Virtual Reality", In Tutorials, Posters, Panels, and Industrial Contributions of the 26th international Conference on Conceptual Modeling (ER 07), Publ. CRPIT, Auckland, New Zealand (2007

Pellens, B., Kleinermann, F., De Troyer, O., Bille, W.: "Model-Based Design of Virtual Environment Behavior", Proceedings of the 12th International Conference on Virtual Systems and Multimedia, pp. 29-39, Eds. H. Zha et al. , Publ. Springer Verlag, LNCS 4270, ISBN 3-540-46304-6, Xian, China (2006)

Pellens, B., De Troyer, O., Bille, W., Kleinermann, F., Romero, R.: "An Ontology-Driven Approach for Modeling Behavior in Virtual Environments", Proceedings of Ontology Mining and Engineering and its Use for Virtual Reality (WOMEUVR 2005), pp. 1215-1224, Eds. Meersman, R. et al., Publ. Springer-Verlag, ISBN 3-540-29739-1, Agia Napa, Cyprus (2005)

Bille, W., De Troyer, O., Pellens, B., Kleinermann, F.: "Conceptual Modeling of Articulated Bodies in Virtual Environments", Proceedings of the 11th International Conference on Virtual Systems and Multimedia, pp. 17-26, Eds. Hal Thwaites, Publ. Archaeolingua, ISBN 963 8046 63 5, Gent, Belgium (2005)

Pellens, B., De Troyer, O., Bille, W., Kleinermann, F.: "Conceptual Modeling of Object Behavior in a Virtual Environment", Proceedings of Virtual Concept 2005, pp. 93-94, Eds. Xavier Fisher et al., Publ. Springer-Verlag, ISBN 2-287-28772-8, Biarritz, France (2005)

Kleinermann, F., De Troyer, O., Mansouri, H., Romero, R., Pellens, B., Bille, W.: "Designing Semantic Virtual Reality Applications", Proceedings of the 2nd INTUITION International Workshop, Senlis, France (2005)

Bille, W., Pellens, B., Kleinermann, F., De Troyer, O.: "Intelligent Modelling of Virtual Worlds Using Domain Ontologies", Proceedings of the Workshop of Intelligent Computing (WIC), held in conjunction with the MICAI 2004 conference, pp. 272 - 279, Eds. L. Sheremetov, M. Alvarado, ISBN 968-489-024-9, Mexico City, Mexico (2004)

Bille, W., De Troyer, O., Kleinermann, F., Pellens, B., Romero, R.: "Using Ontologies to Build Virtual Worlds for the Web", Proceedings of the IADIS International Conference WWW/Internet 2004 (ICWI2004), Volume I, pp. 683 - 690, Eds. Isaias, P., Karmakar, N., Publ. IADIS PRESS, ISBN 972-99353-0-0, Madrid, Spain (2004)

De Troyer, O., Bille, W., Romero, R., Stuer, P.: "On Generating Virtual Worlds from Domain Ontologies", Proceedings of the 9th International Conference on Multi-Media Modeling, Tamkang University, pp. 279 - 294, Eds. Tat-Seng Chua and Tosiyasu L. Kunii, ISBN 957-9078-57-2, Taipei, Taiwan (2003)