Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
3,193
DataCite Metadata Store (German National Library of Science and Technology)
411
Directory of Open Access Journals: DOAJ Articles
54
LeibnizOpen (The Leibniz Association)
38
Copernicus Publications: E-Journals
35
German Aerospace Center: elib - DLR electronic library
29
Unknown
26
Niedersächsisches Online-Archiv NOA
25
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
13
PubMed Central (PMC)
13
Texas Tech University: TTU DSpace Repository
13
Natural Environment Research Council: NERC Open Research Archive
10
Cambridge University Press
9
Université de Nantes: HAL-UNIV-NANTES
7
Ege University Institutional Repository
6
Institut national des sciences de l'Univers: HAL-INSU
6
Utrecht University Repository
6
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
5
MDPI Open Access Publishing
5
Max Planck Society: MPG.PuRe
5
National Institute of Polar Research Repository, Japan
5
ScienceDirect (Elsevier - via Crossref)
5
Institutional Repository of Leibniz Universität Hannover
4
Freie Universität Berlin: Refubium (FU Berlin)
3
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
3
Springer Nature (via Crossref)
3
Stockholm University Press (via Crossref)
3
University of Groningen research database
3
Wageningen UR (University & Research Centre): Digital Library
3
Wiley Online Library
3
eCite UTAS (University of Tasmania)
3
Çukurova University Institutional Repository
3
Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources)
2
GFZ Data Services (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
2
Ghent University Academic Bibliography
2
HighWire Press (Stanford University)
2
Journal of large-scale research facilities (JLSRF)
2
KU Leuven: Lirias
2
Kocaeli University Research Information System
2
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
2
PuSH - Publikationsserver des Helmholtz Zentrums München
2
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
2
University of Innsbruck: Digital Library (Universitäts- und Landesbibliothek Tirol)
2
University of Tasmania: UTas ePrints
2
İstanbul Üniversitesi Açık Erişim Sistemi
2
AAAS Resource Center (American Association for the Advancement of Science - via Crossref)
1
Apollo - University of Cambridge Repository
1
BORIS (Bern Open Repository and Information System, University of Bern)
1
Cologne University: KUPS
1
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
1
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