Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
7,494
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
2,474
ScienceDirect (Elsevier - via Crossref)
1,776
Cambridge University Press
1,495
Copernicus Publications: E-Journals
1,470
Technical University of Denmark: DTU Orbit
1,340
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
964
Institut national des sciences de l'Univers: HAL-INSU
905
Defense Technical Information Center: DTIC Technical Reports database
867
Université de Nantes: HAL-UNIV-NANTES
834
Wiley Online Library
831
Wiley Online Library (via Crossref)
807
Informa (via Crossref)
612
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
511
ScienceDirect (Elsevier)
442
University of Calgary Journal Hosting
439
Utrecht University Repository
421
University of Southern Denmark Research Portal
412
HighWire Press (Stanford University)
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)
336
Aalborg University's Research Portal
331
Digital.CSIC (Spanish National Research Council)
327
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
327
Natural Environment Research Council: NERC Open Research Archive
327
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)
306
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
278
National Institute of Polar Research Repository, Japan
273
University of Bergen: Bergen Open Research Archive (BORA-UiB)
253
HAL Sorbonne Université
251
Canadian Science Publishing (via Crossref)
247
Hathi Trust Digital Library
242
University of St Andrews: Research Portal
241
more ...