S. Tramp, P. Frischmuth, T. Ermilov, and S. Auer. Proceedings of the EKAW 2010 - Knowledge Engineering and Knowledge Management by the Masses; 11th October-15th October 2010 - Lisbon, Portugal, volume 6317 of Lecture Notes in Artificial Intelligence, page 135--149. Berlin / Heidelberg, Springer, (October 2010)