Best Bets for Mathematics and Statistics
Not sure where to begin? Try these first.
The Electronic Research Archive for Mathematics is a project supported by the Deutsche Forschungsgemeinschaft (DFG). It consists of two parts: A literature database based on the "Jahrbuch über die Fortschritte der Mathematik" (1868-1942) and an archive of digitised mathematical publications at the Staats- und Universitätsbibliothek Göttingen.
JSTOR provides access to a digital archive of journals in the areas of Arts, Business, Economics, and Sciences. JSTOR includes the entire runs of these journals, from the very first issue to the volumes published a few years ago. With a small number of exceptions - the "Current Scholarship" titles - JSTOR is a backfile collection and excludes the most recent issues (as part of the terms of the agreement with the journal publishers).