1. Humphreys L, Lindberg D, Schoolman H, Barnett G: The Unified Medical Language System: An Informatics Research Collaboration. Journal of the American Medical Informatics Association 1998,1(5):1–11.
2. Weeber M, Mork J, Aronson A: Developing a Test Collection for Biomedical Word Sense Disambiguation. Proceedings of AMAI Symposium, Washington, DC 2001, 746–50.
3. Aronson A, Bodenreider O, Chang H, Humphrey S, Mork J, Nelson S, Rindflesch T, Wilbur W: The NLM Indexing Initiative. Proceedings of the AMIA Symposium, Los Angeles, CA 2000.
4. Friedman C: A Broad Coverage Natural Language Processing System. Proceedings of the AMIA Symposium, Los Angeles, CA 2000, 270–274.
5. Weeber M, Klein H, Aronson A: Text-based Discovery in Biomedicine: the Architecture of the DAD-system. Proceedings of the AMIA Symposium, Los Angeles, CA 2000, 903–907.