Content Provider
Copernicus Publications: E-Journals
3
DataCite Metadata Store (German National Library of Science and Technology)
3
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
1
LeibnizOpen (The Leibniz Association)
44
NASA Technical Reports Server (NTRS)
1
Niedersächsisches Online-Archiv NOA
3
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1
PubMed Central (PMC)
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
3
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1
University of California: eScholarship
1
University of Montana: ScholarWorks
1
Unknown
9
Utrecht University Repository
1