Content Provider
CyberLeninka (Scientific Electronic Library)
6
Norwegian Institute for Nature Research: Brage NINA
4
The World Bank: Open Knowledge Repository (OKR)
4
DataCite Metadata Store (German National Library of Science and Technology)
2
Altai State University: Scientific Journals of ASU
1
Pensoft Publishers
1
Ural Federal University (URFU): ELAR
1
Zenodo
1