Content Provider
Defense Technical Information Center: DTIC Technical Reports database
541
Research Data Australia (Australian National Data Service - ANDS)
74
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
40
Arctic Data Center (via DataONE)
11
The World Bank: Open Knowledge Repository (OKR)
10
DataCite Metadata Store (German National Library of Science and Technology)
8
ETH Zürich Research Collection
3
Ural Federal University (URFU): ELAR
3
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2
Naval Postgraduate School: Calhoun
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
DataCite
1
Doria (National Library of Finland)
1
HAL Sorbonne Université
1
Institut national des sciences de l'Univers: HAL-INSU
1
Red Iberoamericana de Estudios Internacionales: Ribei Biblioteca Digital
1
Saint Petersburg State University: Research Repository (DSpace SPbU)
1