Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
47
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
15
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
15
Springer Nature (via Crossref)
11
Directory of Open Access Journals: DOAJ Articles
8
OpenAgrar (OA)
7
BORIS (Bern Open Repository and Information System, University of Bern)
4
GEO-LEOe-docs (FID GEO)
4
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
3
Publication Server of Goethe University Frankfurt am Main
3
ULB Düsseldorf: Digitale Sammlungen (University Library of Düsseldorf University)
3
Augsburg University Publication Server (OPUS)
2
KITopen (Karlsruhe Institute of Technologie)
2
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
2
Università degli Studi di Urbino: CINECA IRIS
2
Unknown
2
AMAD - "Archivum Medii Aevi Digitale - Specialized open access repository for research in the middle ages"
1
Aalborg University's Research Portal
1
Aarhus University: OJS at The State and University Library
1
DataCite
1
EconStor (German National Library of Economics, ZBW)
1
Forum: Qualitative Social Research
1
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
1
Georg-August-Universität Göttingen: GoeScholar
1
Justus-Liebig-Universität Giessen: JLUpub
1
MACAU: Open Access Repository of Kiel University
1
Maastricht University Research Publications
1
Martin-Luther-Universität Halle-Wittenberg - Universitäts- und Landesbibliothek Sachsen-Anhalt (E-Journal)
1
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server
1
Peoples' Friendship University of Russia (RUDN): Open repository
1
PhilPapers
1
Publication Server of the Justus-Liebig-University of Giessen
1
ScienceDirect (Elsevier - via Crossref)
1
ScienceDirect (Elsevier)
1
TU Braunschweig: LeoPARD - Publications And Research Data
1
Thieme
1
Tidsskrift.dk (The Royal Library, Denmark)
1
Zeitgeschichte Digital - Publication Server-Center for Contemporary History Potsdam
1
regiopen.journals - Publikationsplattform der Württembergischen Landesbibliothek Stuttgart
1