Postprint

[3] Postprints are variously referred to by different publishers as pre-proofs, author's original version and variations of these.

[1] Journal publication licenses typically claim copyright over the typeset and formatted version, but permit authors to release the postprint version as open access (self-archiving).

[8] This is often termed green open access, and enables access and reuse of material even in paywalled subscription journals (typically under a creative commons license).

[1] Since the advent of the Open Archives Initiative, preprints and postprints have been deposited in institutional repositories, which are interoperable because they are compliant with the Open Archives Initiative Protocol for Metadata Harvesting.

Eprints were first deposited or self-archived in arbitrary websites and then harvested by virtual archives such as CiteSeer (and, more recently, Google Scholar), or they were deposited in central disciplinary archives such as arXiv or PubMed Central.