Bibliography of German-speaking Slavistics 1983-1992 (BibDatSlav)
The "Bibliography of German-speaking Slavistics 1983-1992" was converted from the printed publication to a database and contains about 10.000 bibliographic items. The list of subjects is located here.
Schaller, Helmut - in: Părvi Meždunaroden kongres po bălgaristika, Sofija 23 maj - 3 juni 1981 g. : dokladi : istoričeski razvoj na bălgarskija ezik 1 (1983) 272-280