Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
8,992
DataCite Metadata Store (German National Library of Science and Technology)
8,265
Directory of Open Access Journals: DOAJ Articles
5,453
Unknown
4,542
ScienceDirect (Elsevier - via Crossref)
2,893
Cambridge University Press
2,455
National Institute of Polar Research Repository, Japan
2,399
Springer Nature (via Crossref)
2,251
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2,071
PubMed Central (PMC)
1,707
eCite UTAS (University of Tasmania)
1,637
Copernicus Publications: E-Journals
1,506
Université de Nantes: HAL-UNIV-NANTES
1,478
Wiley Online Library
1,425
Institut national des sciences de l'Univers: HAL-INSU
1,396
LeibnizOpen (The Leibniz Association)
1,310
Natural Environment Research Council: NERC Open Research Archive
1,126
Niedersächsisches Online-Archiv NOA
1,052
Wiley Online Library (via Crossref)
1,018
MDPI Open Access Publishing
905
Informa (via Crossref)
893
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
821
University of Tasmania: UTas ePrints
714
ScienceDirect (Elsevier)
688
University of Canterbury, Christchurch: UC Research Repository
544
Université Grenoble Alpes: HAL
501
Biodiversity Heritage Library (BHL)
468
Zenodo
448
HAL Sorbonne Université
447
Defense Technical Information Center: DTIC Technical Reports database
436
Digital.CSIC (Spanish National Research Council)
428
Università degli Studi di Genova: CINECA IRIS
408
HighWire Press (Stanford University)
404
Università degli Studi di Siena: USiena air
399
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
386
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
374
Macquarie University Research Portal
354
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
345
Université Savoie Mont Blanc: HAL
341
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
327
University of Liège: ORBi (Open Repository and Bibliography)
325
Arctic Portal Library
323
ARPI - Archivio della Ricerca dell'Università di Pisa
307
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
307
Ohio State University (OSU): Knowledge Bank
300
University of Bristol: Bristol Research
299
University of California: eScholarship
295
Utrecht University Repository
291
WikiBooks - Open-content textbooks
284
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
281
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