MathSciNet
American Mathematical Society
JSTOR
Mathematics and Statistics
Zentralblatt MATH
Open Database
B-ON
Online Knowledge Library
Web of Science
Clarivate
Scopus
NUMDAM
NUMérisation de Documents Anciens Mathématiques
DOAJ
Directory of Open Access Journals
Project Euclid
MacTutor
The MacTutor History of Mathematics Archive
MathEduc
Mathematics Education Database
Fundação para a Ciência e Tecnologia