B. Hoser, A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. The Semantic Web: Research and Applications, volume 4011 of Lecture Notes in Computer Science, page 514--529. Berlin/Heidelberg, Springer, (2006)10.1007/11762256_38.
M. Lauras, Y. Verginadis, R. Stühmer, and F. Benaben. Proceedings of the 6th IEEE Int. Conf. on Digital Ecosystems and Technologies for Complex Systems, Environment, and Service Engineering IEEE-DEST 2012, (2012)