平台:
DOAJ Directory of Open Access Journals
(Available from 2008 until 2018.)
ProQuest SciTech Premium Collection
(Available from 2013/01/01 until 2016/09/30.)
DOAJ Directory of Open Access Journals
(Available from 2008 until 2018.)
ProQuest SciTech Premium Collection
(Available from 2013/01/01 until 2016/09/30.)