Content Provider
Copernicus Publications: E-Journals
6
Niedersächsisches Online-Archiv NOA
4
DataCite Metadata Store (German National Library of Science and Technology)
3
Directory of Open Access Journals: DOAJ Articles
3
PANGAEA - Data Publisher for Earth & Environmental Science
3
Unknown
2
Georgia Institute of Technology: SMARTech - Scholarly Materials and Research at Georgia Tech
1
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
1
MDPI Open Access Publishing
1
NILU – Norwegian Institute for Air Research: NILU Brage
1
National Institute of Polar Research Repository, Japan
1
The University of Manchester: Research Explorer
1
University of California: eScholarship
1