Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
6,368
PANGAEA - Data Publisher for Earth & Environmental Science
3,726
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1,144
Zenodo
932
Natural Environment Research Council: NERC Open Research Archive
396
Unknown
315
Directory of Open Access Journals: DOAJ Articles
291
Springer Nature (via Crossref)
262
Copernicus Publications: E-Journals
159
ScienceDirect (Elsevier - via Crossref)
156
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
146
Digital.CSIC (Spanish National Research Council)
137
Cambridge University Press
136
Niedersächsisches Online-Archiv NOA
112
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
109
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
100
ScienceDirect (Elsevier)
93
University of Southampton: e-Prints Soton
83
eCite UTAS (University of Tasmania)
78
Wiley Online Library (via Crossref)
68
Université de Nantes: HAL-UNIV-NANTES
61
LeibnizOpen (The Leibniz Association)
60
University of East Anglia: UEA Digital Repository
60
Magnolia press
55
University of Groningen research database
51
PubMed Central (PMC)
49
Research Data Australia (Australian National Data Service - ANDS)
49
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
48
Institut national des sciences de l'Univers: HAL-INSU
42
University of California: eScholarship
39
NASA Technical Reports Server (NTRS)
36
NOAA NCEI Environmental Data Archive (via DataONE)
36
IEDA: Marine-Geo Digital Library (via DataONE)
35
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
34
Ghent University Academic Bibliography
33
National Institute of Polar Research Repository, Japan
33
Max Planck Society: MPG.PuRe
31
National Library of Australia: Digital Collections
31
University of Bergen: Bergen Open Research Archive (BORA-UiB)
31
University of Tasmania: UTas ePrints
30
DIAL@USL-B (Université Saint-Louis, Bruxelles)
27
MDPI Open Access Publishing
27
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
25
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
25
DIAL@UCLouvain (Université catholique de Louvain)
24
Defense Technical Information Center: DTIC Technical Reports database
24
University of St Andrews: Research Portal
24
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
23
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
22
Informa (via Crossref)
22
more ...