The Bibliographic Database of German Publication on Russia, the Soviet Union and its Successor States (RussGus)

The Bibliographic Database of German Publication on Russia, the Soviet Union and its Successor States (RussGus) contains about 170.000 records from 1974 to 2003 and collects publications of different document types: books, dissertations and other university publications, articles from journals and newspapers including reviews, maps etc. The lists of personal and geographical subjects are located here and here.

Your search for Kupper, Siegfried provides 1 hits
1	Der RGW bleibt bestehen. Zur Diskussion auf der 45. Tagung des östlichen Wirtschaftsbündnisses Kupper, Siegfried, in: Deutschland-Archiv, 23, 1990, S. 391-396

The Bibliographic Database of German Publication on Russia, the Soviet Union and its Successor States (RussGus)

Der RGW bleibt bestehen. Zur Diskussion auf der 45. Tagung des östlichen Wirtschaftsbündnisses