Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
376
Defense Technical Information Center: DTIC Technical Reports database
2
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
1
Norwegian Institute for Water research: NIVA Open Access Archive (Brage)
1
Open archive Norwegian University of Life Sciences: Brage NMBU
1
SAGE Publications (via Crossref)
1
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive
1
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
1
University College London: UCL Discovery
1
University of Copenhagen: Research
1
Utrecht University Repository
1