Green open access
Also called: self-archiving
Open access achieved by depositing a copy in a repository, usually the accepted manuscript rather than the publisher's PDF.
Green OA runs alongside conventional publishing: the article appears in a subscription journal and a copy goes into an institutional or subject repository. Publishers commonly permit the accepted manuscript and impose an embargo of 6 to 24 months.
It is why a paywalled paper often has a free version a search away — and why that version is formatted plainly and paginated differently from the published one.
See also
Open accessResearch literature that is free to read online, and usually free to reuse under an open licence.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.Institutional repositoryA university's own archive of the research its members produce, holding theses, accepted manuscripts, datasets, and reports.