Content Provider
Directory of Open Access Journals: DOAJ Articles
97
Wiley Online Library
49
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
42
Niedersächsisches Online-Archiv NOA
28
RePEc (Research Papers in Economics)
26
Unknown
26
University of Calgary Journal Hosting
23
DataCite Metadata Store (German National Library of Science and Technology)
21
LeibnizOpen (The Leibniz Association)
21
University of California: eScholarship
16
Cambridge University Press
12
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
10
Canadian Science Publishing
10
Institut national des sciences de l'Univers: HAL-INSU
9
University of Potsdam: publish.UP
9
IOP Publishing
8
Université de Nantes: HAL-UNIV-NANTES
8
DataCite
6
Frontiers (Publisher)
6
Archives ouvertes de Paris-Saclay
5
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
4
University of North Texas: UNT Digital Library
4
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
3
Canadian Science Publishing (via Crossref)
3
HAL Sorbonne Université
3
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
3
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server
3
The Royal Society
3
University of Southampton: e-Prints Soton
3
Université Grenoble Alpes: HAL
3
Université Savoie Mont Blanc: HAL
3
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
3
Aarhus University: Research
2
Carleton University's Institutional Repository
2
Cologne University: KUPS
2
ETH Zürich Research Collection
2
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
2
HELDA – University of Helsinki Open Repository
2
Institut National de la Recherche Agronomique: ProdINRA
2
Institut national de la recherche scientifique, Québec: Espace INRS
2
Kazan Federal University Digital Repository
2
Max Planck Society: MPG.PuRe
2
NORA (National aggregator of open repositories of Russian universities)
2
National Research Council Canada: NRC Publications Archive
2
PLOS
2
Peoples' Friendship University of Russia (RUDN): Open repository
2
Publication Database PIK (Potsdam Institute for Climate Impact Research)
2
Queen's University Belfast Research Portal
2
ScienceDirect (Elsevier - via Crossref)
2
ScienceDirect (Elsevier)
2
more ...