George C. Browder, Foundations of the Nazi Police State: The Formation of Sipo and SD (Lexington, Ky, 1990); он же Hitler’s Enforcers: The Gestapo and the SS Security Service in the Nazi Revolution (New York and Oxford, 1996); и Peter Nitschke, «Polizei und Gestapo. Vorauseilender Gehorsam oder polykratischer Konflikt?», в Paul and Mallmann (eds.), Die Gestapo, 306-22.
