1. Antell, K., Huang, J.: Subject searching success transaction logs, patron perceptions, and implications for library instruction. Inf. Storage Retr. 48(1), 69–76 (1998)
2. Slone, D.J.: Encounters with the OPAC: on-line searchingin public libraries. J. Am. Soc. Inform. Sci. 51(8), 757–773 (2000)
3. Tagliacozzo, R., Kochen, M.: Information-seeking behavior of catalog users. Inf. Storage Retr. 6(5), 363–381 (1970)
4. Long, C.E.: Improving subject searching in web-based OPACs. J. Internet Cat. 2, 158–186 (2000)
5. Wood, J.A., Smigielski, E.M., Haynes, G.: Case-based approach for improving student MEDLINE searches. Med. Educ. 41(5), 510–511 (2007)