1. User-specified domain knowledge for document retrieval;Croft,1986
2. Information Retrieval;Van Rijsbergen,1979
3. Indexing by latent semantic analysis;Deerwester;Journal of the Society for Information Science,1990
4. Enhancing Performance in Latent Semantic Indexing (LSI) Retrieval, TM-ARH-017527;Dumais,1990
5. Indexing with WordNet synsets can improve text retrieval;Gonzalo,1998