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).
JSTOR Sustainability is a collection of academic and policy research on environmental stresses and their impact on society. This thematic database includes 115 journals and over 5,400 research reports from more than 30 international policy institutes.