1. , & (2003). Retrieval and novelty detection at the sentence level. In Proceedings of the 26th annual International ACM SIGIR Conference on Research and Development in Information Retrieval (pp. 314–321). New York: ACM.
2. & (1999). Modern information retrieval. New York: ACM Press/Addison-Wesley.
3. User-defined relevance criteria: An exploratory study
4. Users' criteria for relevance evaluation: A cross-situational comparison
5. (1998). Changes in relevance criteria: A longitudinal study. In Proceedings of the 61st annual meeting of the American Society for Information Science (pp. 23–32). Medford, NJ: Information Today.