平台:
DOAJ Directory of Open Access Journals
(Available from 2013.)
Karger Journal Archive
(Available from 1978 volume: 1 issue: 1 until 2016.)
Karger Open Access Journals
(Available from 2013/01/01 volume: 37 issue: 1.)
DOAJ Directory of Open Access Journals
(Available from 2013.)
Karger Journal Archive
(Available from 1978 volume: 1 issue: 1 until 2016.)
Karger Open Access Journals
(Available from 2013/01/01 volume: 37 issue: 1.)