Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
4,007
PANGAEA - Data Publisher for Earth & Environmental Science
1,973
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1,156
Directory of Open Access Journals: DOAJ Articles
1,155
Defense Technical Information Center: DTIC Technical Reports database
1,081
Arctic Data Center (via DataONE)
1,067
Unknown
767
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
399
Copernicus Publications: E-Journals
388
Dryad Digital Repository (Duke University)
328
MDPI Open Access Publishing
251
Zenodo
242
Niedersächsisches Online-Archiv NOA
241
PubMed Central (PMC)
238
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
231
University of California: eScholarship
184
University of Calgary Journal Hosting
159
Université de Nantes: HAL-UNIV-NANTES
155
Wiley Online Library
151
LeibnizOpen (The Leibniz Association)
144
ESS-DIVE: Deep Insight for Earth Science Data (via DataONE)
135
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
127
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
121
RePEc (Research Papers in Economics)
117
Institut national des sciences de l'Univers: HAL-INSU
109
Aarhus University: Research
106
Springer Nature (via Crossref)
106
University of Copenhagen: Research
103
Frontiers: Figshare
93
Wiley Online Library (via Crossref)
92
University of Alaska: ScholarWorks@UA
89
Lund University Publications (LUP)
83
Vrije Universiteit Amsterdam (VU): Research Portal
83
University of Potsdam: publish.UP
81
ScienceDirect (Elsevier - via Crossref)
79
Informa (via Crossref)
71
International Arctic Research Center (IARC) Data Archive (via DataONE)
71
Max Planck Society: MPG.PuRe
70
Canadian Science Publishing (via Crossref)
69
University of Tromsø: Munin Open Research Archive
67
Wageningen UR (University & Research Centre): Digital Library
66
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
59
ETH Zürich Research Collection
53
IOP Publishing (via Crossref)
53
Informa
52
HELDA – University of Helsinki Open Repository
50
Institut national de la recherche scientifique, Québec: Espace INRS
47
Arctic Institute of North America (via Crossref)
46
CyberLeninka (Scientific Electronic Library)
46
DIAL@USL-B (Université Saint-Louis, Bruxelles)
46
more ...