M. Hepp, F. Leymann, J. Domingue, A. Wahler, und D. Fensel. Proceedings of the IEEE International Conference on e-Business Engineering, Seite 535--540. Washington, DC, USA, IEEE Computer Society, (2005)
M. Stollberg, M. Hepp, und J. Hoffmann. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, Volume 4825 von LNCS, Seite 477--490. Berlin, Heidelberg, Springer Verlag, (November 2007)