R. Tesar, V. Strnad, K. Jezek, and M. Poesio. DocEng '06: Proceedings of the 2006 ACM symposium on Document engineering, page 138--146. New York, NY, USA, ACM, (2006)
S. Bloehdorn, and A. Hotho. In Proceedings of the MSW 2004 Workshop at the 10th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, page 70--87. (2004)
J. Hidalgo, G. Bringas, E. Sánz, and F. Garc\'ıa. DocEng '06: Proceedings of the 2006 ACM symposium on Document engineering, page 107--114. New York, NY, USA, ACM, (2006)
I. Androutsopoulos, J. Koutsias, K. Cb, and C. Spyropoulos. In Proceedings of the 23rd annual international ACM SIGIR conference on Research and development in information retrieval, page 160--167. (2000)
G. Cormack, José, and E. Sánz. CIKM '07: Proceedings of the sixteenth ACM conference on Conference on information and knowledge management, page 313--320. New York, NY, USA, ACM, (2007)
G. Cormack, José, and E. Sánz. SIGIR '07: Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval, page 871--872. New York, NY, USA, ACM, (2007)