Content Provider
WikiBooks - Open-content textbooks
93
norden (Nordic Council of Ministers): Publications (DiVA)
92
UNESDOC - UNESCO Digital Library
86
Biodiversity Heritage Library (BHL)
82
Unknown
55
RePEc (Research Papers in Economics)
25
Technical University of Denmark: DTU Orbit
23
Arctic Portal Library
19
Cambridge University Press
19
Aarhus University: Research
18
Aalborg University's Research Portal
13
Open Research Library
13
University of Copenhagen: Research
13
VTT's Research Information Portal
12
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
9
Oxford University Press (via Crossref)
8
University of Southern Denmark Research Portal
8
University of Tromsø: Munin Open Research Archive
8
Marine Institute Open Access Repository
7
Roskilde University Research Portal (RUC)
7
IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis)
6
University of Lapland: Lauda
6
VID Specialized University: VID Open (Brage)
6
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository)
5
LaCRIS - University of Lapland Current Research System
5
Lund University Publications (LUP)
5
Springer Nature
5
University of the Highlands and Islands: Research Database of UHI
5
Zenodo
5
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
4
Sapienza Università di Roma: CINECA IRIS
4
Texas A&M University Digital Repository
4
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
4
Uppsala University: Publications (DiVA)
4
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
3
Arctic Council Repository
3
Doria (National Library of Finland)
3
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3
Publication Server of Goethe University Frankfurt am Main
3
Sámi University College (BIBSYS Brage)
3
Södertörn University College: Publications (DiVA)
3
The London School of Economics and Political Science: LSE Research Online
3
The Nordic Africa Institute: Publications (DiVA)
3
The Open University: Open Research Online (ORO)
3
University of Bergen: Bergen Open Research Archive (BORA-UiB)
3
Utrecht University Repository
3
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
2
Architecture, Design and Conservation - Danish Portal for Artistic and Scientific Research: Research Outputs
2
Danish Defense Research Portal
2
DataCite Metadata Store (German National Library of Science and Technology)
2
more ...