Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
296
Zenodo
130
DataCite
39
Directory of Open Access Journals: DOAJ Articles
2
Digital.CSIC (Spanish National Research Council)
1
Frontiers: Figshare
1
MDPI Open Access Publishing
1
Magnolia press
1
Natural History Museum Repository
1
PANGAEA - Data Publisher for Earth & Environmental Science
1
Sapienza Università di Roma: CINECA IRIS
1
Unknown
1