Content Provider
Directory of Open Access Journals: DOAJ Articles
91
LeibnizOpen (The Leibniz Association)
57
Aarhus University: Research
33
Unknown
29
DataCite Metadata Store (German National Library of Science and Technology)
23
Niedersächsisches Online-Archiv NOA
20
University of Calgary Journal Hosting
18
University of Copenhagen: Research
18
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
17
Cambridge University Press
15
University of California: eScholarship
14
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
12
University of St Andrews: Research Portal
10
University of Tromsø: Munin Open Research Archive
10
White Rose Research Online (Universities of Leeds, Sheffield & York)
10
University of St Andrews: Digital Research Repository
9
Durham University: Durham Research Online
8
Utrecht University Repository
8
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
7
Natural Environment Research Council: NERC Open Research Archive
7
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
7
University of Bristol: Bristol Research
7
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
7
Wiley Online Library
7
Apollo - University of Cambridge Repository
6
Technical University of Denmark: DTU Orbit
6
Wiley Online Library (via Crossref)
6
Zenodo
6
Institut national des sciences de l'Univers: HAL-INSU
5
NIOZ Repository (Royal Netherlands Institute for Sea Research)
5
University of Nottingham: Repository@Nottingham
5
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
4
ETH Zürich Research Collection
4
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
4
Frontiers (Publisher)
4
GEO-LEOe-docs (FID GEO)
4
Informa (via Crossref)
4
Newcastle University Library ePrints Service
4
ORA - Oxford University Research Archive
4
Springer Nature (via Crossref)
4
Universitat de Lleida: Repositori Obert UdL
4
University College London: UCL Discovery
4
University of Bergen: Bergen Open Research Archive (BORA-UiB)
4
University of Glasgow: Enlighten - Publications
4
Université de Nantes: HAL-UNIV-NANTES
4
Aarhus University: OJS at The State and University Library
3
Caltech Authors (California Institute of Technology)
3
Cardiff University: ORCA (Online Research @ Cardiff)
3
DSpace@MIT (Massachusetts Institute of Technology)
3
GEUS Bulletin (Geological Survey of Denmark and Greenland)
3
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