MathSciNet  is a bibliographical database for Mathematics, providing references to journal articles, conference reports and books and also containing reviews and summaries. It covers all areas of pure and applied mathematics as well as the history of mathematics.

MathSciNet is published by the American Mathematical Society and is the online version of Mathematical Reviews and Current Mathematical Publications. The more than 3 million entries go back to the 19th century.

Updated daily.

Alternative mirrors:

http://ams.u-strasbg.fr/mathscinet/
http://ams.mpim-bonn.mpg.de/mathscinet/
http://ams.math.uni-bielefeld.de/mathscinet/
http://ams.impa.br/mathscinet/
http://ams.rice.edu/mathscinet/