MathSciNet
MathSciNet is an index of international scholarship in mathematics and statistics. It includes citations with indexing and abstracts for over 3 million publications, including journal articles, books, and proceedings. For many publications, it also includes brief reviews written by professional mathematicians. In addition to basic searching, the database offers unique search methods. Most publications are classified according to the Mathematics Subject Classification (MSC), which allows searching by mathematical subject. Also, each author is assigned a unique identifier (MR Number), which allows you to easily find all the publications by an author.
MathSciNet is the electronic counterpart and continuation of the print publication Mathematical Reviews.
Early 1800s - present.