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As the key institution for East and Southeast European studies, the Leibniz Institute for East and Southeast European Studies (IOS) maintains a wide range of electronic resources to support research. In addition to the library's services for providing information and full digitized texts in open access, databases have been developed as a result of ongoing, completed, or retro-digitized projects:

  • The extensive Amburger database includes data on almost 100,000 foreigners in the Russian Empire up to 1917 and represents a unique documentation that is actively used by scholars from numerous countries. Professor Amburger bequeathed this card index to the Institute for East European Studies in his will.
  • The BioLexSOE online resource evolved from the biographical encyclopedia, compiled from 1974 to 1981 and providing access to over 1,500 articles on individuals, as further information was added. The selection criterion for the encyclopedia is the significance of the individual included in epochs from the Middle Ages to 1945. As well as people from the nations of Southeast Europe, from the Bosporus to Slovakia, the encyclopedia also includes particular figures from the three historical Southeast European empires (Byzantium, the Ottoman Empire, and the Habsburg Monarchy).
  • The IOS database of economic and social models is an additional service provided by the Institute. The database contains systematic information on important aspects of economic and social models in the countries of (Eastern) Europe and is compiled as part of the "Social Models in International Comparison" research focus.
  • The 100-document source database Confessional Networks of Germans in Russia 1922–1941 (KonNetz) offers insights into those networks that were maintained by both Russian Germans[CH1]  and other actors in the interwar period. The focus here is on official and unofficial, as well as illegal, relations that rested on the common basis of denomination, in the context of the Soviet policy of religious repression pursued since the Great October Socialist Revolution.
  • The database Film and Religion in the Russian Empire and the USSR  developed on the basis of the DFG Heisenberg project "Anti-religious Films and Campaigns in the Soviet Union 1917–1938: Medial Practices of the Desecration of Relics, Icons, and Sacred Buildings" by Natascha Drubek. The database covers a longer period, however, also encompassing the prerevolutionary period. It also includes films from the Tsarist Empire and the USSR, i.e., from territories such as Ukraine that are now independent states.

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