DOAJ: Directory of Open Access Journals
2008-01-01 ~ 현재
PubMed Central (PMC)
2008-01-01 ~ 현재
Wiley Online Library Open Access
2008-01-01 ~ 현재
Wiley Online Library Open Access
2014-01-01 ~ 2015-12-31
DOAB Directory of Open Access Books
2024
DOAB Directory of Open Access Books
2025
ScienceDirect
2008
DOAB Directory of Open Access Books
2024
OAPEN (Open Access Publishing in European Networks)
2011
DOAB Directory of Open Access Books
2011
DOAB Directory of Open Access Books
2011
DOAB Directory of Open Access Books
2021
ScienceDirect
1991