Economics and Usage of Digital Libraries: Byting the BulletSkip other details (including permanent urls, DOI, citation information)
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1. Full information on TULIP is available at http://www.elsevier.com/wps/find/librariansinfo.librarians/tulip .
2. Full information on PEAK is available at http://web.archive.org/web/20011127031111/www.lib.umich.edu/libhome/peak/.
3. Recall that EES (later renamed ScienceDirect On Site — SDOS) was at that time taking the paper product and scanning it, creating a time delay. SDOS currently delivers PDF files created directly in the production process, avoiding the time delays for most journals.
4. (Haar, 1999).
5. During 2000, Web editions were dramatically increased in functionality and coverage was increased to twelve months.