The past thirty years in information retrieval
- 1 September 1987
- journal article
- research article
- Published by Wiley in Journal of the American Society for Information Science
- Vol. 38 (5), 375-380
- https://doi.org/10.1002/(sici)1097-4571(198709)38:5<375::aid-asi5>3.0.co;2-3