Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
519
PANGAEA - Data Publisher for Earth & Environmental Science
467
Unknown
425
Copernicus Publications: E-Journals
271
Directory of Open Access Journals: DOAJ Articles
262
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
205
LeibnizOpen (The Leibniz Association)
174
Niedersächsisches Online-Archiv NOA
165
BORIS (Bern Open Repository and Information System, University of Bern)
163
Université de Nantes: HAL-UNIV-NANTES
150
University of Copenhagen: Research
124
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
57
PubMed Central (PMC)
57
National Institute of Polar Research Repository, Japan
56
Cambridge University Press
55
Natural Environment Research Council: NERC Open Research Archive
46
Lund University Publications (LUP)
45
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
35
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
34
ScienceDirect (Elsevier - via Crossref)
34
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
31
ScholarsArchive@OSU (Oregon State University)
31
Institut national des sciences de l'Univers: HAL-INSU
30
Apollo - University of Cambridge Repository
28
Utrecht University Repository
28
University of Cambridge, Department of Earth Sciences: ESC Publications
24
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca)
24
DORA Eawag
23
University of Groningen research database
23
University of California: eScholarship
22
University of St Andrews: Research Portal
22
Wiley Online Library (via Crossref)
22
Queen's University Belfast Research Portal
21
Springer Nature (via Crossref)
20
University of Bergen: Bergen Open Research Archive (BORA-UiB)
20
Aarhus University: Research
19
Columbia University: Academic Commons
18
Defense Technical Information Center: DTIC Technical Reports database
15
Digital.CSIC (Spanish National Research Council)
14
Max Planck Society: MPG.PuRe
14
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
14
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste)
14
eCite UTAS (University of Tasmania)
14
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
13
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
13
SAGE Publications (via Crossref)
13
University College London: UCL Discovery
12
University of Potsdam: publish.UP
12
University of Southampton: e-Prints Soton
12
University of St Andrews: Digital Research Repository
12
more ...