Content Provider
Unknown
20
DataCite Metadata Store (German National Library of Science and Technology)
18
Directory of Open Access Journals: DOAJ Articles
17
Copernicus Publications: E-Journals
15
University of Calgary Journal Hosting
11
Cambridge University Press
10
Niedersächsisches Online-Archiv NOA
9
University of the Pacific, McGeorge School of Law: Scholarly Commons
8
University of the Pacific: Scholarly Commons
8
University of Lethbridge Digitized Collections
7
Washington State University: WSU Libraries Digital Collections
7
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
5
Defense Technical Information Center: DTIC Technical Reports database
5
Université de Nantes: HAL-UNIV-NANTES
5
WikiBooks - Open-content textbooks
5
Apollo - University of Cambridge Repository
4
Canadian Science Publishing
4
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
4
Institut national des sciences de l'Univers: HAL-INSU
4
PubMed Central (PMC)
4
ScholarsArchive@OSU (Oregon State University)
4
University of Alaska: ScholarWorks@UA
4
Canadian Science Publishing (via Crossref)
3
Hunter Library Digital Collections (Western Carolina University)
3
Météo-France: HAL
3
University of Saskatchewan: eCommons@USASK
3
University of St Andrews: Digital Research Repository
3
Université Toulouse III - Paul Sabatier: HAL-UPS
3
Utrecht University Repository
3
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
3
ETH Zürich Research Collection
2
Montana State University (MSU): ScholarWorks
2
National Institute of Polar Research Repository, Japan
2
PANGAEA - Data Publisher for Earth & Environmental Science
2
RERO DOC Digital Library
2
Technical University of Denmark: DTU Orbit
2
The University of Brighton Research Portal
2
The University of Manchester: Research Explorer
2
University of California: eScholarship
2
University of St Andrews: Research Portal
2
University of Waterloo, Canada: Institutional Repository
2
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
2
Uppsala University: Publications (DiVA)
2
uO Research (University of Ottawa - uOttawa)
2
Aarhus University: OJS at The State and University Library
1
Aarhus University: Research
1
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
1
Archives ouvertes de Paris-Saclay
1
Arctic Portal Library
1
BORIS (Bern Open Repository and Information System, University of Bern)
1
more ...