Content Provider
University of Alaska: ScholarWorks@UA
5
Defense Technical Information Center: DTIC Technical Reports database
4
Washington State University: WSU Libraries Digital Collections
4
Iowa State University Library Digital Collections
3
Boise State University: Scholar Works
2
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
2
University of North Texas: UNT Digital Library
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Caltech Authors (California Institute of Technology)
1
DataCite Metadata Store (German National Library of Science and Technology)
1
Directory of Open Access Journals: DOAJ Articles
1
Durham University: Durham Research Online
1
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
1
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
1
Institut national des sciences de l'Univers: HAL-INSU
1
Padua Research Archive (IRIS - Università degli Studi di Padova)
1
Tufts Digital Library (TDL)
1
University of Michigan: Deep Blue
1
University of Michigan: Digital Collections
1
Università degli Studi di Urbino: CINECA IRIS
1
Université de Nantes: HAL-UNIV-NANTES
1
Université de Paris: Portail HAL
1
Unknown
1
VTechWorks (VirginiaTech)
1