https://copim.pubpub.org/academic-libraries-and-open-access-books-in-europe-a-landscape-study
Items tagged with oa.operas in Open Access Tracking Project (OATP) 02/24/2021
https://www.kb.se/samverkan-och-utveckling/nytt-fran-kb/nyheter-samverkan-och-utveckling/2021-02-22-kb-medlem-i-operas.html
Items tagged with oa.operas in Open Access Tracking Project (OATP) 02/22/2021