J. Spillner, B. Buder, T. Schiefer, and A. Schill. Proceedings of the 4th International Conference on Software and Data Technologies, 2, page 369-375. INSTICC Press, (July 2009)
M. Winkler, J. Spillner, and A. Schill. Service-Oriented Computing, volume 5900 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2009)