@conference {Pellens2005, title = {Conceptual Modeling of Object Behavior in a Virtual Environment}, booktitle = {Research in Interactive Design, Proceedings of the International Virtual Concept Conference}, year = {2005}, pages = {93-94}, publisher = {Springer-Verlag}, organization = {Springer-Verlag}, address = {Biarritz, France}, author = {B. Pellens and O. De Troyer and W. Bille and F. Kleinermann}, editor = {X. Fischer and D. Coutellier} }