Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
2,158
LeibnizOpen (The Leibniz Association)
52
PANGAEA - Data Publisher for Earth & Environmental Science
39
Institute for Marine Research: Brage IMR
33
Unknown
23
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
20
Cambridge University Press
15
Defense Technical Information Center: DTIC Technical Reports database
12
HighWire Press (Stanford University)
12
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
11
Zenodo
11
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
9
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
9
Directory of Open Access Journals: DOAJ Articles
8
Institut national des sciences de l'Univers: HAL-INSU
8
Arctic Data Center (via DataONE)
6
Brill (via Crossref)
6
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
6
Natural Environment Research Council: NERC Open Research Archive
6
Naval Postgraduate School: Calhoun
6
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
6
Aarhus University: Research
5
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
5
University of Calgary Journal Hosting
5
Université de Rennes 1: Publications scientifiques (HAL)
5
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
4
Archive Ouverte de l'Université Rennes (HAL)
4
NOAA NCEI Environmental Data Archive (via DataONE)
4
Norwegian Polar Data Centre
4
Polar Research (E-Journal)
4
Queensland University of Technology: QUT ePrints
4
ScienceDirect (Elsevier - via Crossref)
4
University of Bergen: Bergen Open Research Archive (BORA-UiB)
4
University of Copenhagen: Research
4
Wiley Online Library (via Crossref)
4
Max Planck Society: MPG.PuRe
3
NGU Open Archive (Geological Survey of Norway)
3
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
3
Skemman (Iceland)
3
Springer Nature (via Crossref)
3
University of Cambridge, Department of Earth Sciences: ESC Publications
3
David Rumsey Historical Map Collection (Cartography Associates)
2
GEO-LEOe-docs (FID GEO)
2
Hathi Trust Digital Library
2
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
2
NIOZ Repository (Royal Netherlands Institute for Sea Research)
2
Nofima Knowledge Archive (Brage)
2
Oxford University Press (via Crossref)
2
Padua Research Archive (IRIS - Università degli Studi di Padova)
2
UDORA - The University of Derby Online Research Archive
2
more ...