“Open for Business: Open Access Journals in Commercial Databases”, a new article (dated 27th October 2017) in The Serials Librarian journal.
‘Table 3. Presence of OAs titles in databases’. Percent of DOAJ titles found in database:
Scopus – 29.18%
Academic Search Complete – 18.00%
Web of Science – 10.91%
… between 70.82% and 89.09% of DOAJ journals are not found in the databases analyzed here, which is potentially problematic given that most researchers depend on databases to locate scholarly information