Content Provider
Directory of Open Access Journals: DOAJ Articles
241
Biodiversity Heritage Library (BHL)
56
DataCite Metadata Store (German National Library of Science and Technology)
5
Zenodo
3
Saint Petersburg State University: Research Repository (DSpace SPbU)
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Hathi Trust Digital Library
1
NORA (National aggregator of open repositories of Russian universities)
1
Peoples' Friendship University of Russia (RUDN): Open repository
1
Perm State University: Publications of Geological Faculty
1
Texas Tech University: TTU DSpace Repository
1
UNESDOC - UNESCO Digital Library
1
Université de Nantes: HAL-UNIV-NANTES
1