Content Provider
National Institute of Oceanography, India: Digital Repository Service (DRS@nio)
2
Università degli Studi di Genova: CINECA IRIS
2
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Directory of Open Access Journals: DOAJ Articles
1
HELDA – University of Helsinki Open Repository
1
MDPI Open Access Publishing
1
Norwegian Polar Data Centre
1
SAGE Publications (via Crossref)
1
The University of Maine: DigitalCommons@UMaine
1
University of Groningen research database
1
Unknown
1
eCite UTAS (University of Tasmania)
1