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 Senn, Alfred Erich provides 2 hits
1	Die Schweiz als Asyl für russische Revolutionäre. A. Solschenizyn: Lenin in Zürich Senn, Alfred Erich, in: Schweizer Monatshefte, 1976, S. 693-698
2	Die Schweiz und die bolschewistische Revolution Senn, Alfred Erich, in: Schweizer Monatshefte, 1977, S. 729-738

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

Die Schweiz als Asyl für russische Revolutionäre. A. Solschenizyn: Lenin in Zürich

Die Schweiz und die bolschewistische Revolution