ScienceDirect
2024
ScienceDirect
2004
ScienceDirect
2012
EBSCO Open Access Journals
2009-01-01 ~ 2020-12-31
DOAB Directory of Open Access Books
2024
DOAJ: Directory of Open Access Journals
2012-01-01 ~ 현재
DOAB Directory of Open Access Books
2018
DOAB Directory of Open Access Books
2022
DOAB Directory of Open Access Books
2025
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2021
DOAB Directory of Open Access Books
2021