MathSciNet [via American Mathematical Society]
MathSciNet is the most comprehensive resource for the international literature of mathematics and statistics. Covers approximately 1800 mathematical journals. =Warning for off campus users: MathJax causes browsers to report errors when processing the TeX encoded symbols when using the VPN. Use the MathSciNet Preferences tab to turn MathJax off and display the TeX coding or use the proxy server.