Y. Zhou, L. Wu, F. Weng, и H. Schmidt. Proceedings of the 2003 conference on Empirical methods in natural language processing, стр. 153--159. Morristown, NJ, USA, Association for Computational Linguistics, (2003)
H. Han, C. Giles, E. Manavoglu, H. Zha, Z. Zhang, и E. Fox. JCDL '03: Proceedings of the 3rd ACM/IEEE-CS joint conference on Digital libraries, стр. 37--48. Washington, DC, USA, IEEE Computer Society, (2003)
B. Gutmann, и K. Kersting. Proceedings of the 15th European Conference on Machine Learning (ECML-2006), том 4212 из LNAI (Lecture Notes in Artificial Intelligence), стр. 174--185. Berlin, Germany, Springer, (September 2006)
T. Dietterich, A. Ashenfelter, и Y. Bulatov. ICML '04: Proceedings of the twenty-first international conference on Machine learning, стр. 28. New York, NY, USA, ACM Press, (2004)