Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
5
Arctic Data Center (via DataONE)
2
Defense Technical Information Center: DTIC Technical Reports database
2
Lund University Publications (LUP)
2
PANGAEA - Data Publisher for Earth & Environmental Science
2
Research Data Australia (Australian National Data Service - ANDS)
2
ASU VL (VMU - Vytautas Magnus University Agriculture Academy Virtual Library)
1
Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS)
1
Brooklyn Law School: BrooklynWorks
1
Charles University CU Digital repository
1
Digital.CSIC (Spanish National Research Council)
1
Directory of Open Access Journals: DOAJ Articles
1
GettDigital (Gettysburg College Digital Collections)
1
Jagiellonian University Repository
1
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
1
LSRC VL (Lithuanian Social Research Centre Virtual Library)
1
Naval Postgraduate School: Calhoun
1
Open Research Library
1
Unknown
1
Vytautas Magnus University e-Publication Repository (VMU ePub)
1