Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
4,036
Unknown
170
Zenodo
104
CESSDA DC Data Catalogue (Consortium of European Social Science Data Archives)
103
da|ra - Registration agency for social and economic data
88
NaRDuS (National Repository of Dissertations in Serbia)
86
Directory of Open Access Journals: DOAJ Articles
82
doiSerbia (National Library of Serbia/KoBSON)
58
WikiBooks - Open-content textbooks
53
RADaR - Digital Repository of Archived Publications Institute for Biological Research "Sinisa Stankovic"
30
Redined - Red de información educativa
20
PubMed Central (PMC)
17
RePEc (Research Papers in Economics)
14
Utrecht University Repository
14
RIMSI - Repository of Institute for Multidisciplinary Research (University of Belgrade)
13
Wiley Online Library
13
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
12
Hrčak - Portal of scientific journals of Croatia
12
National Inst. for Public Health and the Environment, Netherlands (RIVM): Webbased Archive of RIVM Publications (WARP)
12
REFF - Faculty of Filosophy Repository, University of Belgrade
12
David Rumsey Historical Map Collection (Cartography Associates)
11
JYX - Jyväskylä University Digital Archive
10
DAIS repository (Digital Archive of the Publications of the Serbian Academy of Sciences and Arts - SASA)
9
GERY - Faculty of Geography Repository University of Belgrade
8
Jewish Digital Library
8
Université de Nantes: HAL-UNIV-NANTES
8
Veterinar - Repository of the Faculty of Veterinary Medicine, University of Belgrade
8
Alia - Finnish Social Science Data Archive
7
CeR - Central Repository ICTM (Institute of Chemistry, Technology and Metallurgy, University of Belgrade)
7
MDPI Open Access Publishing
7
AgroSpace - Faculty of Agriculture, University of Belgrade
6
Charles University CU Digital repository
6
GFZ Data Services (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
6
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
6
RIPEST - Repository of the Institute of Pesticides and Environmental Protection
6
WHO (World Health Organization): Institutional Repository for Information Sharing (IRIS)
6
Jultika - University of Oulu repository
5
RAUmPlan - Repository of Architecture, Urbanism and Planning (Institute of Architecture and Urban & Spatial Planning of Serbia)
5
Repository of the University of Ljubljana (RUL)
5
Springer Nature (via Crossref)
5
USGS Science Data Catalog (via DataONE)
5
BIOREpository (Faculty of Biology, University of Belgrade)
4
De Gruyter (via Crossref)
4
Hirsla - Landspítali University Hospital research archive
4
Institut national des sciences de l'Univers: HAL-INSU
4
MTAK: REAL (Library and Information Centre of the Hungarian Academy of Sciences
4
PANGAEA - Data Publisher for Earth & Environmental Science
4
SCIndeks - Serbian Citation Index
4
Skemman (Iceland)
4
University of Malta: OAR@UM
4
more ...