D. Milne, I. Witten, and D. Nichols. Proceedings of the sixteenth ACM conference on Conference on information and knowledge management, page 445--454. New York, NY, USA, ACM, (2007)
D. Milne, I. Witten, and D. Nichols. CIKM '07: Proceedings of the sixteenth ACM conference on Conference on information and knowledge management, page 445--454. New York, NY, USA, ACM, (2007)