1. Abney, Steven. 2002. Bootstrapping. In Proceedings of 40th Annual Meeting of the Association for Computational Linguistics (ACL), Philadelphia, pages 360-367.
2. Blum, Avrim and Tom Mitchell. 1998. Combining labeled and unlabeled data with co-training. In Proceedings of the 11th Annual Conference on Computational Learning Theory (COLT), pages 92-100. Morgan Kaufmann, San Francisco.
3. Collins, Michael and Yoram Singer. 1999. Unsupervised models for named entity classification. In Proceedings of Empirical Methods in Natural Language Processing (EMNLP), College Park, MD, pages 100-110.
4. Dasgupta, Sanjoy, Michael Littman, and David McAllester. 2001. PAC generalization bounds for co-training. In Proceedings of Advances in Neural Information Processing Systems 14 (NIPS), Vancouver, British Columbia, Canada.
5. Yarowsky, David. 1995. Unsupervised word sense disambiguation rivaling supervised methods. In Proceedings of the 33rd Annual Meeting of the Association for Computational Linguistics, Cambridge, MA, pages 189-196.