Content Provider
AAAS Resource Center (American Association for the Advancement of Science - via Crossref)
2
AAAS Resource Center (American Association for the Advancement of Science)
10
ACS Publications
5
ACS Publications (via Crossref)
1
AMUR - Adam Mickiewicz University Repository, Poznan
1
ARPI - Archivio della Ricerca dell'Università di Pisa
10
Aarhus University: OJS at The State and University Library
1
Aarhus University: Research
25
Aix-Marseille Université: HAL
5
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
684
Apollo - University of Cambridge Repository
7
ArXiv.org (Cornell University Library)
3
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
28
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
65
Archives ouvertes de Paris-Saclay
17
Arctic Data Center (via DataONE)
47
Arctic Portal Library
6
Arctic and Antarctic Research (E-Journal)
2
Australian National University: ANU Digital Collections
8
BORIS (Bern Open Repository and Information System, University of Bern)
3
Bangor University: Research Portal
1
Biodiversity Heritage Library (BHL)
4
Cambridge University Press
14
Canadian Science Publishing
1
Cardiff University: ORCA (Online Research @ Cardiff)
4
Carl von Ossietzky Universität Oldenburg: /oops/ - Oldenburger Online-Publikations-Server
1
CentAUR: Central Archive at the University of Reading
8
Center for International Climate and Environmental Research Oslo (BIBSYS Brage)
1
Chalmers University of Technology: Chalmers research
10
Collège de France: HAL
1
Columbia University: Academic Commons
4
Copernicus Publications: E-Journals
127
CyberLeninka (Scientific Electronic Library)
4
DIAL@UCLouvain (Université catholique de Louvain)
8
DIAL@USL-B (Université Saint-Louis, Bruxelles)
9
DR-NTU (Digital Repository at Nanyang Technological University, Singapore)
1
DSpace@MIT (Massachusetts Institute of Technology)
2
Dalhousie University: DalSpace Institutional Repository
1
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
4
DataCite
381
DataCite Metadata Store (German National Library of Science and Technology)
1,972
DataverseNO
11
De Gruyter
1
Defense Technical Information Center: DTIC Technical Reports database
51
Delft University of Technology: Institutional Repository
5
Digital Commons University of South Florida (USF)
3
Digital.CSIC (Spanish National Research Council)
19
Dipòsit Digital de la Universitat de Barcelona
1
Directory of Open Access Journals: DOAJ Articles
249
Docta Complutense (Universidad Complutense de Madrid - UCM)
1
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