Content Provider
Defense Technical Information Center: DTIC Technical Reports database
3
Unknown
3
DataCite Metadata Store (German National Library of Science and Technology)
2
Directory of Open Access Journals: DOAJ Articles
2
Universidade Federal do Rio Grande do Sul (UFRGS): Lume
2
University of Wollongong, Australia: Research Online
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Arctic Portal Library
1
Australian National University: ANU Digital Collections
1
Brill (via Crossref)
1
CyberLeninka (Scientific Electronic Library)
1
DIAL@USL-B (Université Saint-Louis, Bruxelles)
1
Danish Defense Research Portal
1
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
1
Ike Skelton Combined Arms Research Library (CARL) Digital Library
1
Macquarie University Research Portal
1
National Chengchi University Institutional Repository (NCCUIR)
1
Nova Southeastern University: NSU Works
1
PennState, The Dickinson School of Law: Penn State Law eLibrary
1
RePEc (Research Papers in Economics)
1
Repositório Comum (RCAAP - Repositório Científico de Acesso Aberto de Portugal)
1
SPIRE (Sciences Po Institutional Repository)
1
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
1
University of Alberta: Journal Hosting
1
University of Economics, Prague (VŠE): Science and Research
1
University of Tromsø: Munin Open Research Archive
1