1. https://www.scienceeurope.org/making-open-access-a-reality-by-2020/ (accessed 6 November 2018)
2. Budapest Open Access Initiative declaration
3. See the Creative Commons site: https://creativecommons.org/licenses/. For example on CC BY: ‘This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials’ (accessed 6 November 2018)
4. http://blogs.springeropen.com/springeropen/2016/06/13/a-few-words-on-sound-science-megajournals-and-an-announcement-about-springerplus/ (accessed 6 November 2018)
5. https://blogs.plos.org/thestudentblog/2016/08/24/reforming-publishing-to-value-integrity/ (accessed 6 November 2018)