Web of Science Core Collection
Scopus
Ei Compendex
DOAJ
CrossRef
EBSCO Discovery Service
EBSCO Essentials
OCLC Discovery Services
EuroPub
MIAR
Elektronische Zeitschriftenbibliothek
Publons
UlrichsWEB
Hellenic Academic Libraries Link
Ingenta Connect
Publicly Available Content Database (ProQuest)
Advanced Technologies & Aerospace Database (ProQuest)
SciTech Premium Collection (ProQuest)
Google Scholar
Propose a Special Issue
