EBSCO

SPRINGER

DOAJ

OpenDOAR

eLIRARY

DUKE

SAGE

DOAB

SCIENCEDIRECT

ELGARONLINE

JSTOR

Университетская библиотека онлайн

QUESTIA

OPENSTAX

NORAVANK

ROYALSOCIETY

B-OK

POLPRED

China Data Insights

Armenia ETD-OA

NKi (AcademicFocus)