Content Provider
Directory of Open Access Journals: DOAJ Articles
47
National Institute of Polar Research Repository, Japan
39
Springer Nature (via Crossref)
38
Unknown
34
PubMed Central (PMC)
32
DataCite Metadata Store (German National Library of Science and Technology)
23
Natural Environment Research Council: NERC Open Research Archive
22
eCite UTAS (University of Tasmania)
22
University of Tasmania: UTas ePrints
17
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
16
Cambridge University Press
15
Università degli Studi di Ferrara: CINECA IRIS
14
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
13
Oxford University Press (via Crossref)
13
Padua Research Archive (IRIS - Università degli Studi di Padova)
13
University of St Andrews: Research Portal
12
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
10
MDPI Open Access Publishing
10
ScienceDirect (Elsevier - via Crossref)
10
Institute for Marine Research: Brage IMR
9
OpenAgrar (OA)
9
PANGAEA - Data Publisher for Earth & Environmental Science
9
Université de Nantes: HAL-UNIV-NANTES
9
Digital.CSIC (Spanish National Research Council)
8
HighWire Press (Stanford University)
8
ScienceDirect (Elsevier)
8
Canadian Science Publishing (via Crossref)
7
HAL Sorbonne Université
7
Wiley Online Library
7
Wiley Online Library (via Crossref)
7
The University of Queensland: UQ eSpace
6
University of Canterbury, Christchurch: UC Research Repository
6
Griffith University: Griffith Research Online
5
Institut national des sciences de l'Univers: HAL-INSU
5
University of California: eScholarship
5
BioMed Central
4
Oxford University Press
4
University of St Andrews: Digital Research Repository
4
Università degli Studi di Siena: USiena air
4
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3
Informa (via Crossref)
3
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML)
3
Texas A&M University Digital Repository
3
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
3
Universidad de Las Palmas de Gran Canaria: Acceda
3
Universidade de Coimbra: Estudo Geral
3
University of Cape Town: OpenUCT
3
University of Tromsø: Munin Open Research Archive
3
Wageningen UR (University & Research Centre): Digital Library
3
Arctic Portal Library
2
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