Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
570
LeibnizOpen (The Leibniz Association)
123
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
48
Unknown
42
Norsk Polarinstitutt: Brage NP
35
Norwegian Polar Institute: Brage NP
34
EconStor (German National Library of Economics, ZBW)
29
Universitäts- und Landesbibliothek Sachsen-Anhalt: Bibliotheca Ponickaviana
22
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
21
University of Freiburg: FreiDok
5
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
4
Organic Eprints (Danish Research Centre for Organic Farming, DARCOF)
4
Publication Server of Goethe University Frankfurt am Main
4
Robert Koch Institute: Publications
4
Bayreuth University: EPub Bayreuth
3
Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources)
3
Max Planck Society: MPG.PuRe
3
UFZ - Publication Index (Helmholtz-Centre for Environmental Research)
3
ETH Zürich Research Collection
2
German Aerospace Center: elib - DLR electronic library
2
Justus-Liebig-Universität Giessen: JLUpub
2
OpenAgrar (OA)
2
Publikationsdatenbank der Fraunhofer-Gesellschaft
2
REPOSIT HAW Hamburg
2
Saxon State Library - State and University Library Dresden (SLUB): Qucosa
2
TUHH Open Research (TORE - Technische Universität Hamburg)
2
Zenodo
2
AgEcon Search - Research in Agricultural & Applied Economics
1
FreiDok plus - Zeppelin Universität
1
Hungarian Electronic Library (MEK)
1
Kujawsko-Pomorska Digital Library (Nicolaus Copernicus University Torun) / Kujawsko-Pomorska Biblioteka Cyfrowa
1
Leuphana University of Lüneburg: Forschungsindex FOX
1
MIUSE - Mie University Scholarly E-collection
1
Munich Personal RePEc Archive (MPRA - Ludwig-Maximilians-University Munich)
1
OPUS - Publication Server of the University of Stuttgart
1
PUB - Publications at Bielefeld University
1
Publication Database IASS (Institute for Advanced Sustainability Studies Potsdam)
1
Publication Server of the FH Aachen University of Applied Sciences
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
1
Swedish Agency for Marine and Water Management (DiVA)
1
University of Basel: edoc
1
Universität Osnabrück: osnaDocs
1
WHO (World Health Organization): Institutional Repository for Information Sharing (IRIS)
1
Wuppertal Institute for Climate, Environment and Energy: Publication Server
1