Content Provider
Australian National University: ANU Digital Collections
2
Czasopisma UKSW (Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie)
1
DataCite Metadata Store (German National Library of Science and Technology)
4
Directory of Open Access Journals: DOAJ Articles
3
Frontiers: Figshare
1
Jagiellonian University Repository
1
Magnolia press
5
Pensoft Publishers
2
Polar Research
1
Purdue University: e-Pubs
1
Queen's University Belfast Research Portal
2
Research Data Australia (Australian National Data Service - ANDS)
1
Stellenbosch University: SUNScholar Research Repository
1
The Royal Society: Figshare
3
The University of Adelaide: Digital Library
1
The University of Waikato: Research Commons
4
University of Groningen research database
1
Università degli Studi di Siena: USiena air
3
Unknown
1
VU Research Repository
1
Zenodo
8