RussGus: 3 hits for Weißmann, .

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 Weißmann, . provides 3 hits
1	Benjamin M. Weissmann: Herbert Hoover and Famine Relif to Soviet Russia: 1921-1923. (Hoover Institution Publications, 134) Schwabe, Klaus, in: Jahrbücher für Geschichte Osteuropas, 1976, N.F. 24, S. 592-595 (Rezension)
2	The War Correspondence of Leon Trotsky. The Balkan Wars 1912-1913. Ed. by George Lavan Weissmann and Duncan Williams Troebst, Stefan, in: Jahrbücher für Geschichte Osteuropas, 30, 1982, S. 470-471 (Rezension)
3	Livland im achtzehnten Jahrhundert. Umrisse zu einer livländischen Geschichte Eckardt, Julius, Hannover-Döhren: von Hirschheydt 1976, 595 S.

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

Benjamin M. Weissmann: Herbert Hoover and Famine Relif to Soviet Russia: 1921-1923. (Hoover Institution Publications, 134)

The War Correspondence of Leon Trotsky. The Balkan Wars 1912-1913. Ed. by George Lavan Weissmann and Duncan Williams

Livland im achtzehnten Jahrhundert. Umrisse zu einer livländischen Geschichte