Content Provider
Directory of Open Access Journals: DOAJ Articles
120
University of California: eScholarship
72
Unknown
54
Natural Environment Research Council: NERC Open Research Archive
53
Cambridge University Press
49
Niedersächsisches Online-Archiv NOA
44
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
41
DataCite Metadata Store (German National Library of Science and Technology)
41
LeibnizOpen (The Leibniz Association)
37
Cambridge University Press (via Crossref)
32
Royal Holloway University of London: Royal Holloway Digital Repository
26
Université de Nantes: HAL-UNIV-NANTES
26
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
25
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
16
DESY Publication Database (PUBDB)
13
Institut national des sciences de l'Univers: HAL-INSU
12
ORA - Oxford University Research Archive
12
Wiley Online Library (via Crossref)
12
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
11
Springer Nature (via Crossref)
10
The University of Adelaide: Digital Library
10
eCite UTAS (University of Tasmania)
10
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8
Australian National University: ANU Digital Collections
8
Caltech Authors (California Institute of Technology)
8
ScienceDirect (Elsevier - via Crossref)
8
University of East Anglia: UEA Digital Repository
8
Curtin University: espace
7
Ghent University Academic Bibliography
7
KITopen (Karlsruhe Institute of Technologie)
7
University of Tasmania: UTas ePrints
7
BORIS (Bern Open Repository and Information System, University of Bern)
6
SAGE Publications (via Crossref)
6
University College London: UCL Discovery
6
White Rose Research Online (Universities of Leeds, Sheffield & York)
6
Wiley Online Library
6
ARPI - Archivio della Ricerca dell'Università di Pisa
5
Cardiff University: ORCA (Online Research @ Cardiff)
5
Dialnet - Portada de revistas (Universidad de La Rioja)
5
Lancaster University: Lancaster Eprints
5
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
5
Oxford University Press (via Crossref)
5
Polar Research (E-Journal)
5
AIP Publishing
4
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
4
DSpace@MIT (Massachusetts Institute of Technology)
4
Imperial College London: Spiral
4
JSTOR (via Crossref)
4
Lund University Publications (LUP)
4
Max Planck Society: MPG.PuRe
4
more ...