Content Provider
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
36
University of North Texas: UNT Digital Library
23
Directory of Open Access Journals: DOAJ Articles
11
Università degli Studi di Bari Aldo Moro: CINECA IRIS
3
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
2
NOVA: The University of Newcastle Research Online (Australia)
2
Ağrı İbrahim Çeçen University Institutional Repository (DSpae@Ağrı)
1
Clemson University: TigerPrints
1
Irstea Publications et Bases documentaires (Irstea@doc/CemOA)
1
MDPI Open Access Publishing
1
National Technical University of Athens (NTUA): DSpace
1
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS)
1
Repository of the University of Ljubljana (RUL)
1
Unknown
1
Çukurova University Institutional Repository
1