Content Provider
Directory of Open Access Journals: DOAJ Articles
15
MDPI Open Access Publishing
12
DataCite Metadata Store (German National Library of Science and Technology)
4
Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP
4
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste)
3
Unknown
3
Frontiers: Figshare
2
IRIS Università degli Studi di Perugia
2
Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR
2
Padua Research Archive (IRIS - Università degli Studi di Padova)
2
University of Groningen research database
2
Università degli Studi di Messina: IRIS
2
Brno University of Technology (VUT): Digital Library
1
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
1
Cranfield University: Collection of E-Research - CERES
1
Dipòsit Digital de la Universitat de Barcelona
1
IEDA: US Antarctic Program Data Center (via DataONE)
1
IRIS Università degli Studi di Napoli Federico II
1
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria)
1
PANGAEA - Data Publisher for Earth & Environmental Science
1
SRUC (Scotland's Rural College): Research Portal
1
The University of Milan: Archivio Istituzionale della Ricerca (AIR)
1
UNSW Sydney (The University of New South Wales): UNSWorks
1
University of Liège: ORBi (Open Repository and Bibliography)
1
University of São Paulo: Digital Library of Theses and Dissertations
1
University of the Highlands and Islands: Research Database of UHI
1
Università degli studi della Tuscia: Unitus DSpace
1
ZHAW digitalcollection (Repository of the Zurich University of Applied Sciences)
1