Version four of the Institutional Repository Bibliography is now available from Digital Scholarship. This selective bibliography presents over 500 articles, books, technical reports, and other scholarly textual sources that are useful in understanding institutional repositories (see the scope note for details). All included works are in English. It is available under a Creative Commons Attribution-Noncommercial
3.0 United States License.

http://digital-scholarship.org/irb/irb.html

The bibliography has the following sections (all sections have been updated except "3 Multiple-Institution Repositories"):

1 General
2 Country and Regional Surveys
3 Multiple-Institution Repositories
4 Specific Institutional Repositories
5 Digital Preservation
6 Library Issues
7 Metadata
8 Institutional Open Access Mandates and Policies
9 R&D Projects
10 Research Studies
11 Software
12 Electronic Theses and Dissertations
Appendix A. Related Bibliographies
Appendix B. About the Author