MathSciNet
For advanced Mathematics research, MathSciNet cannot be beat for its organization, authority, breadth, and depth. If you find something on MathSciNet which is not full-text, come back to another database to search for it - but start at MathSciNet.
MathSciNet is a database of reviews, abstracts and bibliographic information for much of the mathematical sciences literature. Authors are uniquely identified (by their MR Author ID), enabling a search for publications by individual author rather than by name which may not be unique. Expert professional mathematicians write reviews of the current published literature; over 80,000 reviews are added to the database each year. MathSciNet® contains almost 3 million items and over 1.7 million direct links to original articles. Bibliographic data from retrodigitized articles dates back to the early 1800s. Reference lists are collected and matched internally from approximately 550 journals, and citation data for journals, authors, articles and reviews is provided. This web of citations allows users to track the history and influence of research publications in the mathematical sciences.