Various dictionaries are available (incl. Duden).

A collaborative effort of the Networked Digital Library of Theses and Dissertations (NDLTD), OCLC, VTLS, and Scirus, the NDLTD Union Catalog contains more than one million records of electronic theses and dissertations. For students and researchers, the Union Catalog makes individual collections of NDLTD member institutions and consortia appear as one seamless digital library of electronic theses and dissertations.

This Slavic Studies Bundle by Brill comprises 14 digitized collections with rare and often unique materials covering various aspects of Russian and Soviet history.