DOAB Directory of Open Access Books
2020
DOAB Directory of Open Access Books
2021
DOAB Directory of Open Access Books
2025
OAPEN (Open Access Publishing in European Networks)
2019
DOAB Directory of Open Access Books
2019
DOAB Directory of Open Access Books
2024
DOAB Directory of Open Access Books
2021
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2026
ScienceDirect
2016
ScienceDirect
2025