Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
2
Digital Repository of Scientific Institutes (RCIN)
2
Directory of Open Access Journals: DOAJ Articles
1
Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources)
1
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1