- MathSciNet This link opens in a new windowAmerican Mathematical Society database containing over 3 million brief authoritative reviews of mathematics articles and books from 1940 to present, organized in the Mathematics Subject Classification system and by citation linkage.

- Zentralblatt MathematicsEuropean database containing over 3 million brief authoritative reviews of mathematics articles and books from 1826 to present, organized by the Mathematics Subject Classification system. No LSU subscription, but limited open access.
- Mathematics Subject ClassificationThe Mathematics Subject Classification system is how MathSciNet and Zentralblatt are organized.

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