DOAB Directory of Open Access Books
2017
DOAB Directory of Open Access Books
2020
ScienceDirect
2026
DOAB Directory of Open Access Books
2022
ScienceDirect
2023
ScienceDirect
2019
ScienceDirect
2019
DOAB Directory of Open Access Books
2015
IOS Press Open Access eBooks
2015
DOAB Directory of Open Access Books
2024
OAPEN (Open Access Publishing in European Networks)
2019
DOAB Directory of Open Access Books
2019
Springer Nature Link eBooks - Fully Open Access
2019