Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
2
Defense Technical Information Center: DTIC Technical Reports database
2
Research Data Australia (Australian National Data Service - ANDS)
2
Digital.CSIC (Spanish National Research Council)
1
Directory of Open Access Journals: DOAJ Articles
1
MDPI Open Access Publishing
1
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
1
Sapienza Università di Roma: CINECA IRIS
1
UNSW Sydney (The University of New South Wales): UNSWorks
1
Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge
1
Unknown
1