Content Provider
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
190
PANGAEA - Data Publisher for Earth & Environmental Science
85
DataCite Metadata Store (German National Library of Science and Technology)
80
Directory of Open Access Journals: DOAJ Articles
73
DataCite
67
Copernicus Publications: E-Journals
44
Unknown
28
Niedersächsisches Online-Archiv NOA
26
Arctic Data Center (via DataONE)
22
MDPI Open Access Publishing
21
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
20
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
19
Institut national des sciences de l'Univers: HAL-INSU
16
Zenodo
16
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
13
Université de Nantes: HAL-UNIV-NANTES
13
Archives ouvertes de Paris-Saclay
12
Max Planck Society: MPG.PuRe
12
Wiley Online Library
12
ESS-DIVE: Deep Insight for Earth Science Data (via DataONE)
10
Université Paris 1 Panthéon-Sorbonne: HAL
9
Vrije Universiteit Amsterdam (VU): Research Portal
9
Kazan Federal University Digital Repository
8
NORA (National aggregator of open repositories of Russian universities)
8
CyberLeninka (Scientific Electronic Library)
7
Frontiers (Publisher)
7
Frontiers: Figshare
7
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
7
ediss.sub.hamburg (Staats- und Universitätsbibliothek Hamburg, Carl von Ossietzky)
7
Hereon Publications (Helmholtz-Zentrum)
6
Saint Petersburg State University: Research Repository (DSpace SPbU)
6
Aarhus University: Research
5
Freie Universität Berlin: Refubium (FU Berlin)
5
ORA - Oxford University Research Archive
5
Portail HAL-ANR (Agence Nationale de la Recherche)
5
PubMed Central (PMC)
5
University of California: eScholarship
5
University of Potsdam: publish.UP
5
Aix-Marseille Université: HAL
4
Arctic and Antarctic Research
3
HAL Université Côte d'Azur
3
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
3
IOP Publishing
3
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server
3
RePEc (Research Papers in Economics)
3
ScholarsArchive@OSU (Oregon State University)
3
ScienceDirect (Elsevier)
3
Stockholm University: Publications (DiVA)
3
Swedish Museum of Natural History: Publications (DiVA)
3
The Journal of Soils and Environment
3
more ...