G. Neumann, and B. Sacaleanu. Evaluating Systems for Multilingual and Multimodal Information Access: 4th Workshop of the Cross-Language Evaluation Forum, CLEF 2003, Trondheim, Norway, volume 3237 of Lecture Notes in Computer Science, Springer, Berlin, (2004)
B. Sacaleanu, G. Neumann, and C. Spurk. Evaluating Systems for Multilingual and Multimodal Information Access: 9th Workshop of the Cross-Language Evaluation Forum, CLEF 2008, Aarhus, Denmark, volume 5706 of Lecture Notes in Computer Science, Springer, Berlin, (2009)
M. Denecke, and N. Yasuda. Recent Trends in Discourse and Dialogue, volume 39 of Text, Speech and Language Technology, chapter 9, Springer, Dordrecht, (2008)