Open Access Policy


Open Access Statement

PEARL is fully open access. All articles are freely available online in PDF immediately upon publication. Readers may download, print, copy and use articles for lawful purposes, provided that the licence terms are followed and the authors and journal are properly acknowledged.


Authors retain copyright and full publishing rights. The corresponding author confirms the originality of the work and the genuine contribution of all named authors, and is responsible for obtaining permissions for any third party material included in the manuscript.


Licensing Terms

Articles are published under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Users may share and adapt the work in any medium, with appropriate credit, a link to the licence and a clear indication of changes. Users may not introduce legal or technical restrictions that limit others from exercising the rights granted by this licence. Licence details: https://creativecommons.org/licenses/by/4.0/