Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
4,524
DataCite Metadata Store (German National Library of Science and Technology)
1,731
NOAA NCEI Environmental Data Archive (via DataONE)
874
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
187
Defense Technical Information Center: DTIC Technical Reports database
179
Unknown
120
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
110
Directory of Open Access Journals: DOAJ Articles
93
Springer Nature (via Crossref)
80
ScienceDirect (Elsevier - via Crossref)
68
LeibnizOpen (The Leibniz Association)
58
Zenodo
47
Wiley Online Library
45
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
39
Copernicus Publications: E-Journals
39
Institute for Marine Research: Brage IMR
39
Naval Postgraduate School: Calhoun
37
NASA Technical Reports Server (NTRS)
34
ScienceDirect (Elsevier)
34
University of Bergen: Bergen Open Research Archive (BORA-UiB)
33
Aarhus University: Research
32
University of Tromsø: Munin Open Research Archive
30
University of Southampton: e-Prints Soton
29
HighWire Press (Stanford University)
28
Natural Environment Research Council: NERC Open Research Archive
28
Cambridge University Press
27
Digital.CSIC (Spanish National Research Council)
27
Niedersächsisches Online-Archiv NOA
25
Technical University of Denmark: DTU Orbit
22
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
21
Instituto Español de Oceanografía: e-IEO
20
Université de Nantes: HAL-UNIV-NANTES
20
Arctic Data Center (via DataONE)
19
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
18
National Institute of Polar Research Repository, Japan
17
Polar Research (E-Journal)
17
PubMed Central (PMC)
17
University of Calgary Journal Hosting
17
University of the Highlands and Islands: Research Database of UHI
17
Max Planck Society: MPG.PuRe
16
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
16
Institut national des sciences de l'Univers: HAL-INSU
15
Frontiers: Figshare
14
Norsk Polarinstitutt: Brage NP
14
Norwegian Polar Institute: Brage NP
14
University of East Anglia: UEA Digital Repository
14
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
13
IEEE Publications (via Crossref)
13
Informa (via Crossref)
13
University of Copenhagen: Research
13
more ...