Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
51
Natural Environment Research Council: NERC Open Research Archive
4
Unknown
4
Copernicus Publications: E-Journals
3
Directory of Open Access Journals: DOAJ Articles
3
PANGAEA - Data Publisher for Earth & Environmental Science
3
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
2
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
2
Niedersächsisches Online-Archiv NOA
2
DataCite
1
Digital Commons University of South Florida (USF)
1
Lancaster University: Lancaster Eprints
1
Polar Research
1
Universidad de Las Palmas de Gran Canaria: Acceda
1
University of Pretoria: UPSpace
1
University of South Florida St. Petersburg: Digital USFSP
1
University of Southampton: e-Prints Soton
1
University of São Paulo: Digital Library of Theses and Dissertations
1
W&M ScholarWorks
1