DOAB Directory of Open Access Books
2008
OAPEN (Open Access Publishing in European Networks)
2008
DOAB Directory of Open Access Books
2019
DOAB Directory of Open Access Books
2024
OAPEN (Open Access Publishing in European Networks)
2014
DOAB Directory of Open Access Books
2014
Taylor & Francis eBooks (Open Access)
2014
ScienceDirect
2025
ScienceDirect
2024
DOAB Directory of Open Access Books
2025
OAPEN (Open Access Publishing in European Networks)
2023
Springer Nature Link eBooks - Fully Open Access
2023
DOAB Directory of Open Access Books
2023