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In particular, the EUM applies the Creative Commons CC BY (Attribution) and CC BY-SA (Attribution-Share-Alike) licences, which are internationally recognised legal instruments to foster the open dissemination of scientific content. The CC BY licence allows anyone to share, re-use and adapt the work, even for commercial purposes, provided that authorship is always attributed to the original author. The CC BY-SA licence, in addition to requiring attribution, requires that any derivative works be distributed under the same licence, thus preserving the open nature of knowledge.

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In addition, on works still covered by copyright, EUM grants licences and subsidiary rights to third parties allowing reproduction, re-use or adaptation of the content, originally published by the publishing house, in different contexts, languages and territories, subject to refusal of approval for publication in case of doubts about the integrity and accuracy of the edition granted.

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