Content Provider
NASA Technical Reports Server (NTRS)
17
The Winnower
17
University of Canterbury, Christchurch: UC Research Repository
6
Copernicus Publications: E-Journals
5
University of California: eScholarship
5
BioMed Central
4
OSKAR Bordeaux (Open Science Knowledge ARchive)
4
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre)
2
Australian National University: ANU Digital Collections
2
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
2
IntechOpen (E-Books)
2
OpenEdition
2
PeerJ Publishing
2
Università degli Studi di Genova: CINECA IRIS
2
Unknown
2
Australian Nuclear Science and Technology Organisation: ANSTO Publications Online
1
COS Center for Open Science (via Crossref)
1
Charles University CU Digital repository
1
DataCite Metadata Store (German National Library of Science and Technology)
1
DataSpace at Princeton University
1
Georg-August-Universität Göttingen: eDiss
1
Irstea Publications et Bases documentaires (Irstea@doc/CemOA)
1
TUMSAT-OACIS (Tokyo University of Marine Science and Technology: Open Access Collection of International and Scholarly Papers)
1
Universitat Politècnica de Catalunya (UPC): Theses and Dissertations Online (TDX)
1
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca)
1