Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
335
Unknown
7
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
4
Universidade Federal do Rio Grande do Sul (UFRGS): Lume
4
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
3
CyberLeninka (Scientific Electronic Library)
2
Directory of Open Access Journals: DOAJ Articles
2
Research Data Australia (Australian National Data Service - ANDS)
2
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Bavarian Digital Repository (BDR - Bayerische Staatsbibliothek Munich, BSB)
1
Cambridge University Press (via Crossref)
1
Electrical Engineering and Power Engineering (EE&PE - E-Journal)
1
OpenEdition
1
Opin vísindi (Iceland)
1
Pensoft Publishers
1
Periódicos Científicos da UFRGS (Universidade Federal do Rio Grande do Sul)
1
PubMed Central (PMC)
1
Scientific Periodicals of Ukraine (Ukrainian Research and Academic Network)
1
Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge
1
University of Copenhagen: Research
1
Université de Nantes: HAL-UNIV-NANTES
1