Content Provider
LeibnizOpen (The Leibniz Association)
93
Directory of Open Access Journals: DOAJ Articles
60
Natural Environment Research Council: NERC Open Research Archive
49
University of California: eScholarship
42
Unknown
37
Niedersächsisches Online-Archiv NOA
31
Northumbria University, Newcastle: Northumbria Research Link (NRL)
20
Cambridge University Press
18
DataCite Metadata Store (German National Library of Science and Technology)
14
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
12
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
7
Caltech Authors (California Institute of Technology)
7
Utrecht University Repository
7
Digital Commons University of South Florida (USF)
6
Imperial College London: Spiral
6
Lancaster University: Lancaster Eprints
6
Springer Nature (via Crossref)
6
University College London: UCL Discovery
6
University of South Florida St. Petersburg: Digital USFSP
6
White Rose Research Online (Universities of Leeds, Sheffield & York)
6
eCite UTAS (University of Tasmania)
6
Durham University: Durham Research Online
5
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
5
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
5
University of Southampton: e-Prints Soton
5
Université de Nantes: HAL-UNIV-NANTES
5
Apollo - University of Cambridge Repository
3
Australian National University: ANU Digital Collections
3
Columbia University: Academic Commons
3
Institut national des sciences de l'Univers: HAL-INSU
3
ScienceDirect (Elsevier - via Crossref)
3
The Royal Society (via Crossref)
3
The University of Liverpool Repository
3
University of Bristol: Bristol Research
3
University of East Anglia: UEA Digital Repository
3
University of Tasmania: UTas ePrints
3
Delft University of Technology: Institutional Repository
2
ETH Zürich Research Collection
2
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
2
Frontiers (Publisher)
2
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
2
German Aerospace Center: elib - DLR electronic library
2
HAL Sorbonne Université
2
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
2
LaCRIS - University of Lapland Current Research System
2
Montana State University (MSU): ScholarWorks
2
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
2
Publication Database PIK (Potsdam Institute for Climate Impact Research)
2
The University of Kansas: KU ScholarWorks
2
University of Bergen: Bergen Open Research Archive (BORA-UiB)
2
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