Emerging Sources Citation Index http://mjl.clarivate.com/
Scopus http://www.scopus.com/
INSPEC http://www.theiet.org/resources/inspec/
DOAJ https://doaj.org/
EBSCO https://www.ebsco.com/
Google Scholar http://scholar.google.com/
CNKI Scholar http://scholar.cnki.net/
ProQuest http://https://www.proquest.com/
WorldCat https://www.worldcat.org/
ResearchBib http://journalseeker.researchbib.com/
It is the goal to have the periodical indexed by EI Compendex, SCI(E), etc.