Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
431
Directory of Open Access Journals: DOAJ Articles
287
Frontiers: Figshare
178
Unknown
178
PANGAEA - Data Publisher for Earth & Environmental Science
176
Springer Nature (via Crossref)
137
ScienceDirect (Elsevier - via Crossref)
130
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
117
University of California: eScholarship
110
Bioscientifica (via Crossref)
90
DRO - Deakin Research Online
86
Wiley Online Library (via Crossref)
79
Université de Nantes: HAL-UNIV-NANTES
73
University of Groningen research database
68
Dryad Digital Repository (Duke University)
67
MDPI Open Access Publishing
66
Defense Technical Information Center: DTIC Technical Reports database
55
Frontiers (Publisher)
45
University of St Andrews: Research Portal
41
University of Stirling: Stirling Digital Research Repository
41
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
40
Aarhus University: Research
39
Institut national des sciences de l'Univers: HAL-INSU
39
Zenodo
38
Digital.CSIC (Spanish National Research Council)
37
Oxford University Press (via Crossref)
37
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
36
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
36
Université de Bretagne Occidentale: HAL
34
Oxford University Press
33
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
31
ScienceDirect (Elsevier)
30
University of North Texas: UNT Digital Library
29
Jultika - University of Oulu repository
27
Wiley Online Library
27
The University of Queensland: UQ eSpace
26
University of Tasmania: UTas ePrints
26
Imperial College London: Spiral
24
Wageningen UR (University & Research Centre): Digital Library
23
Opin vísindi (Iceland)
22
Universidad de Las Palmas de Gran Canaria: Acceda
22
The Royal Society: Figshare
21
Hirsla - Landspítali University Hospital research archive
20
Portail HAL-ANR (Agence Nationale de la Recherche)
19
Technical University of Denmark: DTU Orbit
19
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
18
University of Southern Denmark Research Portal
18
CyberLeninka (Scientific Electronic Library)
17
University of Copenhagen: Research
17
HAL Sorbonne Université
16
more ...