WOS
Arts & humanities citation index.
BIOSIS citation index.
BIOSIS previews.
Book citation index, Science.
Book citation index, Social sciences & humanites.
Conference proceedings citation index, Science.
Conference proceedings citation index, Social science & humanities.
Current chemical reactions.
Current contents connect.
Data citation index.
Dewent innovations index.
Emerging sources citation index.
Index chemicus.
KCI-Korean journal database.
MEDLINE.
Preprint citation index.
ProQuest dissertations & theses citation index.
Russian science citation index.
SciELO citation index.
Science citation index expanded.
Social sciences citation index.
Web of science core collection.
Zoological record (Thomson Reuters)