R. Neßelrath, T. Becker, M. Reiplinger, and T. Schwartz. Intelligente Vernetzung in der Fabrik: Industrie 4.0 Umsetzungsbeispiele für die Praxis, Fraunhofer Verlag, Stuttgart, (2015)
J. Martinez Lastra, and I. Delamer. Advances in Web Semantics I: Ontologies, Web Services and Applied Semantic Web, volume 4891 of Lecture Notes in Computer Science, Springer, Berlin, (2009)
S. Blümling, and N. Reithinger. Proceedings of DeLFI Workshops 2015, co-located with 13th e-Learning Conference of the German Computer Society (DeLFI-15), Munich, Germany, volume 1443 of CEUR Workshop Proceedings, page 10--18. RWTH Aachen, Sun SITE Central Europe, (2015)