ScienceDirect
2001
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2005
DOAB Directory of Open Access Books
2020
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2025
DOAB Directory of Open Access Books
2015
DOAB Directory of Open Access Books
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DOAJ: Directory of Open Access Journals
2014-01-01 ~ 현재
PubMed Central (PMC)
2018-01-01 ~ 현재
Korea Citation Index (KCI) – Open Access
1986-01-01 ~ 현재
ScienceDirect
2014
DOAJ: Directory of Open Access Journals
2023-01-01 ~ 현재
DOAB Directory of Open Access Books
2013