M. Romanelli, P. Buitelaar, and M. Sintek. Semantic Multimedia: Second International Conference on Semantic and Digital Media Technologies, SAMT 2007, Genoa, Italy, volume 4816 of Lecture Notes in Computer Science, Springer, Berlin, (2008)
A. Gangemi, N. Guarino, C. Masolo, A. Oltramari, and L. Schneider. Knowledge Engineering and Knowledge Management: Ontologies and the Semantic Web, volume 2473 of Lecture Notes in Artificial Intelligence, Springer, Berlin, (2002)