C. Ardito, R. Lanzilotti, P. Buono, and A. Piccinno. Proceedings of the working conference on Advanced visual interfaces, page 278--281. Venezia, Italy, ACM, (2006)
C. Atkinson, and T. Kühne. 8th International Conference on Model Driven Engineering Languages and Systems (MoDELS 2005), volume 3713 of Lecture Notes in Computer Science, page 398-413. Springer, (2005)
S. Auer, C. Bizer, J. Lehmann, G. Kobilarov, R. Cyganiak, and Z. Ives. Proceedings of the 6th International Semantic Web Conference and 2nd Asian Semantic Web Conference (ISWC/ASWC2007), Busan, South Korea, volume 4825 of LNCS, page 715--728. Berlin, Heidelberg, Springer Verlag, (November 2007)