Institutional repository
A university's own archive of the research its members produce, holding theses, accepted manuscripts, datasets, and reports.
Repositories are where green open access actually lives, and where a university's theses and technical reports are usually the only public copy. Items get persistent identifiers — a handle or a DOI — so they are citable.
For grey literature and dissertations, the repository record is frequently the best citation target available: stable, dated, and complete, where a departmental web page is none of those things.
Do it on CitationEasy
See also
Green open accessOpen access achieved by depositing a copy in a repository, usually the accepted manuscript rather than the publisher's PDF.Grey literatureResearch and reporting published outside commercial channels: government and NGO reports, working papers, theses, standards, and conference material.Handle / persistent URIA persistent identifier issued by a repository, of which the DOI is the best-known implementation.Postprint (accepted manuscript)The version of a paper after peer review but before the publisher's typesetting — the version most repositories are allowed to host.