author- SIGIR Forum 24(3):56-61 (1990)
- Encyclopedia of Database Systems, Springer US, (2009)
- Encyclopedia of Database Systems, Springer US, (2009)
- Inf. Process. Manage. 33(6):761-783 (1997)
- Proceedings of the 3rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, page 172-191. Kent, UK, Butterworth \& Co., (1981)
- BMC Med. (2004)
- RIAO, page 293-319. CID, (1985)
- (1990)
- (1990)
- (1994)
- (1994)
- (1990)
- Mathematical and Computer Modelling of Dynamical Systems 3(4):297--322 (1997)
- Information Processing \& Management 26(1):171-186 (1990)
- Information Processing \& Management 33(6):761-783 (1997)
- Information Processing and Management 33(6):761-783 (1997)
- Computing Department, Lancaster University, UK, (1997)
- R\&D Report 6166. British Library, (1994)
- Proceedings of the 14th British Computer Society Information Retrieval Colloquium, page 151-154. Springer Verlag, (1992)
- Recent Advances in Computational Terminology, volume 2 of Natural Language Processing, chapter 17, John Benjamins Publishing Company, (2001)
