Indexing & Abstracting

European Reference Index for Humanities and Social Sciences (ERIH PLUS) (2015-)
https://dbh.nsd.uib.no/publiseringskanaler/erihplus/periodical/info?id=486646

DOAJ Directory of Open Access Journals (2013-)
http://www.doaj.org/doaj?func=browse&uiLanguage=en&queryField=Studia+Educatio
http://doaj.org/toc/02a216f73d4247d0b7347c5cf4b7c611

EBSCO – EBSCOhost Online Research Databases (2009-)
http://www.ebscohost.com/titleLists/e5h-coverage.htm
www.mnmk.ro/documents/ebsco.pdf
-Central & Eastern European Academic Source, 3/1/2009-
-Current Abstracts, 3/1/2009-
-One Belt, One Road Reference Source, 3/1/2009-
-TOC Premier (Table of Contents), 3/1/2009-

ProQuest - Serials Solutions - Ulrich's [Ulrich's Periodicals Directory (1998-); ULRICH'S (TM) Serials (2007-); since 2007 Ulrich’s becomes a part of Serials Solutions in the ProQuest family]
http://ulrichsweb.serialssolutions.com/

Index Copernicus - IC Journal Master List (2012-)
http://jml2012.indexcopernicus.com/masterlist.php?q=1453-4223

openaccessarticles.com (Open Access Publishers)
http://www.openaccessarticles.com/journal/1453-4223

J-Gate Informatics Publishing Limited (2019-)
https://www.informaticsglobal.com/information-products/j-gate/

scilit.net
https://www.scilit.net/journal/1580636

and many other international catalogs.