@article{Jahn2022, author = {Jahn, Najko and Matthias, Lisa and Laakso, Mikael}, year = {2022}, language = {eng}, copyright = {https://creativecommons.org/licenses/by/4.0/}, title = {Toward transparency of hybrid open access through publisher-provided metadata: An article-level study of Elsevier}, volume = {73}, pages = {104 - 118}, url = "http://dx.doi.org/10.17169/refubium-31798", }