Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
290
LeibnizOpen (The Leibniz Association)
279
PANGAEA - Data Publisher for Earth & Environmental Science
155
Aarhus University: Research
139
Directory of Open Access Journals: DOAJ Articles
129
University of Calgary Journal Hosting
111
Biodiversity Heritage Library (BHL)
110
University of Copenhagen: Research
83
Unknown
75
Aalborg University's Research Portal
65
Apollo - University of Cambridge Repository
65
Zenodo
53
University of Southern Denmark Research Portal
33
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
24
Technical University of Denmark: DTU Orbit
22
Roskilde University Research Portal (RUC)
17
Université de Nantes: HAL-UNIV-NANTES
16
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
15
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
12
Lund University Publications (LUP)
9
Lund University Publications Student Papers (LUP-SP)
9
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
8
MDPI Open Access Publishing
8
Université Grenoble Alpes: HAL
8
Umeå University: Publications (DiVA)
6
Washington State University: WSU Libraries Digital Collections
6
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
6
UQAM - Université du Québec à Montréal: archipel
5
University of California: eScholarship
5
University of Tromsø: Septentrio Academic Publishing
5
Université de Bourgogne (UB): HAL
5
Utrecht University Repository
5
Digital.CSIC (Spanish National Research Council)
4
ETH Zürich Research Collection
4
Edinburgh Research Archive (ERA - University of Edinburgh)
4
National Institute of Polar Research Repository, Japan
4
Ohio State University (OSU): Knowledge Bank
4
TU Delft: Institutional Repository (Delft University of Technology)
4
University of North Texas: UNT Digital Library
4
University of St Andrews: Research Portal
4
AMUR - Adam Mickiewicz University Repository, Poznan
3
Archives ouvertes de Paris-Saclay
3
Carolina Digital Repository (UNC - University of North Carolina)
3
Defense Technical Information Center: DTIC Technical Reports database
3
GEUS Bulletin (Geological Survey of Denmark and Greenland)
3
HELDA – University of Helsinki Open Repository
3
Jultika - University of Oulu repository
3
Magnolia press
3
Pensoft Publishers
3
Polar Research
3
more ...