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Soviet terrorism in Free Germany : Hearing before the Subcommittee to Investigate the Administration of the Internal Security Act and Other Internal Security Laws of the Committee on the Judiciary, United States Senate, Eighty-sixth Congress, second session. Testimony of Theodor Hans. September 21, 1960
Hans, Theodor, (1960)
Persecution and Migrant Self-Selection : Evidence from the Collapse of the Communist Bloc
Abramitzky, Ran, (2022)
Stalinization of the Bulgarian society : 1949-1953
Devedjiev, Hristo H., (1975)