Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
7,489
DataCite Metadata Store (German National Library of Science and Technology)
6,197
Unknown
3,741
Directory of Open Access Journals: DOAJ Articles
3,588
University of Copenhagen: Research
3,160
Aarhus University: Research
2,471
ScienceDirect (Elsevier - via Crossref)
1,776
Cambridge University Press
1,486
Copernicus Publications: E-Journals
1,470
Technical University of Denmark: DTU Orbit
1,338
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1,256
LeibnizOpen (The Leibniz Association)
1,201
Springer Nature (via Crossref)
1,149
PubMed Central (PMC)
1,038
Niedersächsisches Online-Archiv NOA
963
Institut national des sciences de l'Univers: HAL-INSU
895
Defense Technical Information Center: DTIC Technical Reports database
867
Wiley Online Library (via Crossref)
858
Université de Nantes: HAL-UNIV-NANTES
834
Wiley Online Library
762
Informa (via Crossref)
629
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
511
ScienceDirect (Elsevier)
442
University of Calgary Journal Hosting
439
Utrecht University Repository
421
HighWire Press (Stanford University)
409
University of Southern Denmark Research Portal
409
Zenodo
360
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
355
University of Liège: ORBi (Open Repository and Bibliography)
339
Lund University Publications (LUP)
334
Aalborg University's Research Portal
330
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
327
Natural Environment Research Council: NERC Open Research Archive
327
Digital.CSIC (Spanish National Research Council)
326
BORIS (Bern Open Repository and Information System, University of Bern)
323
University of Bristol: Bristol Research
312
GEUS Bulletin (Geological Survey of Denmark and Greenland)
305
MDPI Open Access Publishing
303
Biodiversity Heritage Library (BHL)
302
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
301
Université Grenoble Alpes: HAL
288
Apollo - University of Cambridge Repository
279
University of Tromsø: Munin Open Research Archive
277
National Institute of Polar Research Repository, Japan
273
Canadian Science Publishing (via Crossref)
255
University of Bergen: Bergen Open Research Archive (BORA-UiB)
253
HAL Sorbonne Université
248
Oxford University Press (via Crossref)
243
Hathi Trust Digital Library
242
more ...