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Open Access (OA) is free, immediate, permanent, full-text, online access to digital, scientific and scholarly material for any user across the web.

The aim of Open Access

The aim of open access is to facilitate the exchange of scientific information. Thus, the research results can become accessible to everybody.

How is Open Access provided?

There are two main models in providing open access:

1. Open Access archives or repositories (also known as the ‘green road' to OA)

Open Access archives or repositories are digital collections of research articles that have been placed there by their authors. In OA, self-archiving authors publish in a subscription journal but, in addition, they make their articles freely accessible online, usually by depositing them in either an institutional or in a discipline-specific repository. The deposits can have many forms: preprints (journal articles before publication), postprints (journal articles after publication), theses, monographs, technical reports, working papers, etc.

2. Open Access scientific journals (also known as the ‘golden road' to OA)

Open Access journals are peer-reviewed online journals freely accessible to anyone without charge. They are based on various business models depending on the publisher's policy. OA journals are published by the traditional publishers, by exclusively OA publishers and by new hybrid publishing models.

Open Access should not be confused with open content which includes the general permission to modify a given work. Open Access principles refer to free and unrestricted availability without allowing modifications of the research results. It is important to keep an article's content static and to associate it with a fixed author.

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