Database
EBSCOhost Ebook Collection
242
Proquest Ebook Central Academic Complete
230
Springer Complete eBooks
106
Springer e-books
18
Oxford Scholarship Online
14
Books at JSTOR
13
Springer Nature Complete Journals
13
EBSCO Open Access Journals
12
Springer eBooks
12
Academic Search Premier
6
DOAJ: Directory of Open Access Journals
6
IOPscience Extra excluding ECS
4
ScienceDirect
4
De Gruyter Open Journals
2
Geometry Topology Analysis and Theoretical Physics
2
Hindawi Open Access Journals
2
Math-Net.RU
2
NUMDAM
2
Academic Video Online
1
American Institute of Physics
1
MIT Press Direct to Open
1
Project Euclid
1
ScienceDirect Open Access Titles
1
Springer - LINK
1
SpringerLink Journals Fully Open Access
1