•
平台:
DOAJ Directory of Open Access Journals
(Available from 2003.)
EBSCOhost Environment Complete
(Available from 2009/12/01.)
MDPI - Multidisciplinary Digital Publishing Institute
(Available from 2003 volume: 1 issue: 1.)
ProQuest Biological Science Database
(Available from 2003/01/01 volume: 1 issue: 1.)
ProQuest Earth, Atmospheric & Aquatic Science Database
(Available from 2003/01/01 volume: 1 issue: 1.)
ProQuest SciTech Premium Collection
(Available from 2003/01/01 volume: 1 issue: 1.)
PubMed Central Open Access
(Available from 2003 volume: 1.)