This database is an online version of the Mathematical Reviews published by the American Mathematical Society. It contains all review articles of the Mathematical Reviews since its publication in 1940, including journals, books, conference proceedings, collected works and preprints. MathSciNet contains more than 2 million pieces of information and more than 1 million links in the original materials which cover more than 220 publishers and over 450 journals. The database adds more than 100,000 new items and grows more than 40,000 comments written by experts each year.