S. Bloehdorn, and A. Moschitti. roceedings of the Sixteenth ACM Conference on Information and Knowledge Management, CIKM 2007, page 861--864. Lisbon, Portugal, (November 2007)
S. Bloehdorn, and A. Moschitti. CIKM '07: Proceedings of the sixteenth ACM conference on Conference on information and knowledge management, page 861--864. New York, NY, USA, ACM, (2007)