Perspectives in Conceptual Modeling - International Conference on Conceptual Modeling; Akoka, Jacky; Kanade, Takeo; Bertolotto, Michela; Comyn-Wattiau, Isabelle; Kolp, Manuel; Kop, Christian; Liddle, Stephen W.; Mayr, Heinrich C.; Song, Il-Yeol; Trujillo, Juan; v.d. Heuvel, Willem-Jan (Springer Berlin / Heidelberg, 2005)