Content Provider
Defense Technical Information Center: DTIC Technical Reports database
58
Ohio State University (OSU): Knowledge Bank
41
LeibnizOpen (The Leibniz Association)
19
Directory of Open Access Journals: DOAJ Articles
11
Unknown
9
MDPI Open Access Publishing
6
Université de Nantes: HAL-UNIV-NANTES
6
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
5
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
4
DataCite Metadata Store (German National Library of Science and Technology)
3
University of Calgary Journal Hosting
3
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre)
2
National Institute of Polar Research Repository, Japan
2
Portal Czasopism Naukowych (E-Journals)
2
Portland State University: PDXScholar
2
Technical University of Denmark: DTU Orbit
2
The University of Adelaide: Digital Library
2
Universidad de Chile: Repositorio académico
2
University of Tasmania: UTas ePrints
2
Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia)
1
Archives ouvertes de Paris-Saclay
1
Archivio della ricerca dell'Università di Modena e Reggio Emilia (Unimore: IRIS)
1
Australian National University: ANU Digital Collections
1
Australian Nuclear Science and Technology Organisation: ANSTO Publications Online
1
Claremont Colleges Digital Library (CCDL)
1
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
1
DIAL@USL-B (Université Saint-Louis, Bruxelles)
1
DORA Empa
1
Delft University of Technology: Institutional Repository
1
DergiPark Akademik (E-Journals)
1
Dialnet - Portada de revistas (Universidad de La Rioja)
1
Digital Commons @ American University Washington College of Law
1
Digital.CSIC (Spanish National Research Council)
1
EPHE (Ecole pratique des hautes études, Paris): HAL
1
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
1
Frontiers: Figshare
1
HAL Portal Paul-Valéry University Montpellier 3
1
HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules)
1
Harvard University: Harvard Collections
1
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
1
Indiana University - Purdue University Indianapolis: IUPUI Scholar Works
1
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
1
LSRC VL (Lithuanian Social Research Centre Virtual Library)
1
LSU Digital Commons (Louisiana State University)
1
LaCRIS - University of Lapland Current Research System
1
Masaryk University Journals
1
PANGAEA - Data Publisher for Earth & Environmental Science
1
Peking University Institutional Repository (PKU IR)
1
Polish Botanical Society Journals
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
1
more ...