Content Provider
Directory of Open Access Journals: DOAJ Articles
646
Natural Environment Research Council: NERC Open Research Archive
202
DataCite Metadata Store (German National Library of Science and Technology)
172
Unknown
167
Niedersächsisches Online-Archiv NOA
165
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
150
LeibnizOpen (The Leibniz Association)
134
Cambridge University Press
118
Université de Nantes: HAL-UNIV-NANTES
90
Springer Nature (via Crossref)
81
Wiley Online Library
76
Institut national des sciences de l'Univers: HAL-INSU
69
eCite UTAS (University of Tasmania)
66
University of Calgary Journal Hosting
64
University of California: eScholarship
63
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
59
ScienceDirect (Elsevier - via Crossref)
57
Digital.CSIC (Spanish National Research Council)
46
University of Tasmania: UTas ePrints
41
Max Planck Society: MPG.PuRe
40
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
39
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
35
Australian National University: ANU Digital Collections
31
Arctic Portal Library
25
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
24
RePEc (Research Papers in Economics)
23
University of Southampton: e-Prints Soton
23
DIAL@USL-B (Université Saint-Louis, Bruxelles)
22
Informa (via Crossref)
21
Aarhus University: Research
20
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
20
University College London: UCL Discovery
20
University of East Anglia: UEA Digital Repository
20
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
20
Polar Research (E-Journal)
19
ScienceDirect (Elsevier)
19
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
18
University of Tromsø: Munin Open Research Archive
18
Lund University Publications (LUP)
17
White Rose Research Online (Universities of Leeds, Sheffield & York)
17
Brill (via Crossref)
16
DSpace@MIT (Massachusetts Institute of Technology)
16
IOP Publishing
16
University of Copenhagen: Research
16
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
15
Magnolia press
15
Northumbria University, Newcastle: Northumbria Research Link (NRL)
15
University of Groningen research database
14
Cambridge University Press (via Crossref)
13
ETH Zürich Research Collection
13
more ...