Content Provider
Directory of Open Access Journals: DOAJ Articles
157
DataCite Metadata Store (German National Library of Science and Technology)
108
Biodiversity Heritage Library (BHL)
49
DigiZeitschriften: The German digital journal archive (Göttingen University Library)
28
German Aerospace Center: elib - DLR electronic library
24
Dresden University of Technology: Qucosa
12
OPUS - Publication Server of the University of Stuttgart
12
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
9
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
7
Georg-August-Universität Göttingen: GOEDOC
6
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
6
Bavarian Digital Repository (BDR - Bayerische Staatsbibliothek Munich, BSB)
4
Freie Universität Berlin: Refubium (FU Berlin)
4
GEO-LEOe-docs (FID GEO)
4
RWTH Aachen University: RWTH Publications
4
Unknown
4
BORIS (Bern Open Repository and Information System, University of Bern)
3
Bergische Universität Wuppertal: Electronic Publications
3
Berufsverband Information Bibliothek (BIB): OPUS
3
DBGPrints-Archive (German Soil Science Society)
3
Digital Library Thüringen
3
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3
Harvard University: Harvard Collections
3
BAM-Publica - Publikationsserver der Bundesanstalt für Materialforschung und -prüfung (BAM)
2
Biologie in unserer Zeit (BiuZ - E-Journal)
2
Digital Repository of Scientific Institutes (RCIN)
2
Duncker & Humblot eLibrary
2
Eldorado - Repositorium der TU Dortmund
2
Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources)
2
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
2
Graz University (UGR): Unipub
2
Institutional Repository of Leibniz Universität Hannover
2
KITopen (Karlsruhe Institute of Technologie)
2
MACAU: Open Access Repository of Kiel University
2
Publication Server of Goethe University Frankfurt am Main
2
Springer Nature (via Crossref)
2
University of Freiburg: FreiDok
2
University of Michigan: Digital Collections
2
pedocs document server (German Education Portal/DIPF)
2
Cologne University: KUPS
1
DigitalCommons@Ursinus College
1
Directory of Open Access Journals: DOAJ Journals
1
Eberhard Karls University Tübingen: Publication System
1
Frankfurt/Main University Library: Digitale Sammlungen
1
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
1
Max Planck Society: MPG.PuRe
1
Münster University (WWU): miami
1
OPUS FAU - Online publication system of Friedrich-Alexander-Universität Erlangen-Nürnberg
1
Publication Server of Greifswald University
1
TU Berlin: Deposit Once
1
more ...