1. Aas, K., & Eikvil, L. (1999). Text categorisation: A survey. Technical Report NR 941, Norwegian Computing Center, June.
2. Angelova, R., & Siersdorfer, S. (2006). A neighborhood-based approach for clustering of linked document collecitons. In Proceedings of the 15th ACM conference on Information and knowledge management (pp. 778–779).
3. Bekkerman, R., El-Yaniv, R., Tishby, N., & Winter, Y. (2003). Distributional word clusters vs. words for text categorization. Journal of Machine Learning Research, 3, 1183–1208.
4. Bergmark, D. (2000). Automatic extraction of reference linking information from online documents. Technical Report CSTR 2000-1821, Cornell Digital Library Research Group.
5. Bergmark D., Phempoonpanich P., & Zhao, S. (2001). Scraping the ACM digital library. SIGIR Forum, 35(2), 1–7