Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
7,345
DataCite Metadata Store (German National Library of Science and Technology)
4,958
Unknown
3,681
Directory of Open Access Journals: DOAJ Articles
3,572
University of Copenhagen: Research
2,517
Aarhus University: Research
2,143
ScienceDirect (Elsevier - via Crossref)
1,776
Copernicus Publications: E-Journals
1,463
Cambridge University Press
1,333
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1,239
Springer Nature (via Crossref)
1,149
LeibnizOpen (The Leibniz Association)
1,121
Technical University of Denmark: DTU Orbit
1,049
PubMed Central (PMC)
1,029
Niedersächsisches Online-Archiv NOA
942
Defense Technical Information Center: DTIC Technical Reports database
867
Université de Nantes: HAL-UNIV-NANTES
832
Wiley Online Library (via Crossref)
765
Informa (via Crossref)
612
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
509
ScienceDirect (Elsevier)
442
University of Calgary Journal Hosting
439
HighWire Press (Stanford University)
409
Utrecht University Repository
409
Wiley Online Library
401
Institut national des sciences de l'Univers: HAL-INSU
392
Zenodo
358
Digital.CSIC (Spanish National Research Council)
326
Natural Environment Research Council: NERC Open Research Archive
326
BORIS (Bern Open Repository and Information System, University of Bern)
317
Lund University Publications (LUP)
312
GEUS Bulletin (Geological Survey of Denmark and Greenland)
305
MDPI Open Access Publishing
303
Biodiversity Heritage Library (BHL)
300
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
298
University of Southern Denmark Research Portal
295
Aalborg University's Research Portal
288
Apollo - University of Cambridge Repository
276
University of Tromsø: Munin Open Research Archive
275
National Institute of Polar Research Repository, Japan
273
University of Bergen: Bergen Open Research Archive (BORA-UiB)
252
Canadian Science Publishing (via Crossref)
247
Hathi Trust Digital Library
242
University of St Andrews: Research Portal
237
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
229
White Rose Research Online (Universities of Leeds, Sheffield & York)
215
University of California: eScholarship
208
University of Bristol: Bristol Research
202
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
195
Aarhus University: OJS at The State and University Library
192
more ...