The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

The European Bibliography of Slavic and East European Studies (EBSEES) collects books, journal articles, reviews and dissertations from Eastern Europe (former countries of Eastern Bloc) which were published in Belgium, Germany, Finland, France, Great Britain, the Netherlands, Austria and Switzerland from 1991 to 2007. The segment "Literature" and "Culture" of the European Bibliography of Slavic and East European Studies contains 18.000 bibliographic entries (from the total asset of 85.000). More information can be found here.

Your search for Soviet Union / Foreign Relations / Hungary provides 2 hits
1	Empire by Coercion: The Soviet Union and Hungary in the 1950s Borhi, L, in: Cold War History 1, 2001, pp. 47-72
2	The Hungarian Crisis of 1956: The Soviet Role in the Light of New Archival Documents Stykalin, A, in: Cold War History 2, 2001, pp. 113-144

The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

Empire by Coercion: The Soviet Union and Hungary in the 1950s

The Hungarian Crisis of 1956: The Soviet Role in the Light of New Archival Documents