Content Provider
LeibnizOpen (The Leibniz Association)
39
Directory of Open Access Journals: DOAJ Articles
4
Unknown
4
University of Calgary Journal Hosting
3
Digital.CSIC (Spanish National Research Council)
2
University of Tasmania: UTas ePrints
2
DataCite Metadata Store (German National Library of Science and Technology)
1
ETH Zürich Research Collection
1
Lund University Publications (LUP)
1
Università degli Studi di Urbino: CINECA IRIS
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1
Xiamen University Institutional Repository
1