Economics and Usage of Digital Libraries: Byting the BulletSkip other details (including permanent urls, DOI, citation information)
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† I thank Steve Finch, Paul Ginsparg, Jim Gray, Eric Grosse, Kevin Guthrie, Stevan Harnad, Steve Heller, Patrick Ion, Don King, Kevin Kiyan, Greg Kuperberg, Leslie Lamport, Steve Lawrence, Carol Montgomery, Gary Mullen, Ann Okerson, Kimberly Parker, Robby Robson, Carol Tenopir, Ed Valauskas, Hal Varian, Tom Walker, and Herb Wilf, for providing comments, corrections, and helpful information.
1. For circulation figures for major research libraries in the U.S., see Association of Research Libraries, Statistics and Measurement Program (http://www.arl.org/stats/index.html).
5. For more evidence, see also Klopfenstein (1989) and the references there.
8. See endnote 10 to Chapter 2 of Buckland (1992) for references.
10. A summary is presented in King and Tenopir (this volume).
11. The University of Wisconsin study is available at http://wendt.library.wisc.edu/archive/journals/costben.html
12. This page is available at http://research.microsoft.com/users/lamport/tla/tla.html.
13. This is based on extrapolating very freely from data kindly supplied by Paul Ginsparg
14. The data for January 1999 is incomplete, since the main server was then in transition from Denmark to the U.S.
15. For an account of the project, see Sloane's recent paper Sloane (1998).