Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
293
DataCite
154
Universidad de Salamanca: Gredos (Gestión del Repositorio Documental de la Universidad de Salamanca)
76
Wiley Online Library
72
Zenodo
43
Wageningen UR (University & Research Centre): Digital Library
33
Directory of Open Access Journals: DOAJ Articles
27
Unknown
27
Frankfurt/Main University Library: Digitale Sammlungen
25
University of Groningen research database
21
Springer Nature (via Crossref)
19
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
18
CyberLeninka (Scientific Electronic Library)
16
Informa (via Crossref)
15
Charles University CU Digital repository
14
Université de Nantes: HAL-UNIV-NANTES
13
COCOON - COllections de COrpus Oraux Numériques
12
Federation of Finnish Learned Societies: Scientific Journals Online
12
OLAC: Open Language Archives Community
12
University of East Anglia: UEA Digital Repository
12
AgroParisTech: HAL (Institut des sciences et industries du vivant et de l'environnement)
11
PubMed Central (PMC)
10
University of the Balearic Islands (UIB): Digital Library
10
OpenAgrar (OA)
9
Bergen Open Access Publishing (University of Bergen Library)
8
Czech Academy of Sciences: dKNAV
8
Informa
7
JSTOR
7
Aarhus University: Research
6
DergiPark Akademik (E-Journals)
6
Institut National de la Recherche Agronomique: ProdINRA
6
University of St Andrews: Research Portal
6
University of Stirling: Stirling Digital Research Repository
6
Vernadsky National Library of Ukraine: DSpace
6
De Gruyter
5
Digital.CSIC (Spanish National Research Council)
5
HAL Sorbonne Université
5
Muséum National d'Histoire Naturelle (MNHM): HAL
5
Publication Server of Goethe University Frankfurt am Main
5
RePEc (Research Papers in Economics)
5
Hrčak - Portal of scientific journals of Croatia
4
JSTOR (via Crossref)
4
Oxford University Press
4
ScienceDirect (Elsevier - via Crossref)
4
University of Bergen: Bergen Open Research Archive (BORA-UiB)
4
De Gruyter (via Crossref)
3
Imperial College London: Spiral
3
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
3
LSRC VL (Lithuanian Social Research Centre Virtual Library)
3
Lund University Publications (LUP)
3
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