The following publications are possibly variants of this publication:
- Erratum: An Evaluation of Interactive Boolean and Natural Language Searching with an Online Medical Textbook. August 1995 Issue, pages 478-489William R. Hersh, David H. Hickam. jasis, 46(9):719, 1995.
- A Comparison of Boolean and Natural Language Searching for the TREC-6 Interactive TaskWilliam R. Hersh, Bikram Day. trec 1997: 585-595 [doi]
- A Large-Scale Comparison of Boolean vs. Natural Language Searching for the TREC-7 Interactive TrackWilliam R. Hersh, Susan Price, Dale Kraemer, Benjamin Chan, Lynetta Sacherek, Daniel Olson. trec 1998: 429-438