CIRCUMSTANCES LEADING TO A POLICE STATE - THE CONFLICT BETWEEN ULBRICHT,WALTER AND WOLLWEBER,ERNST AND THE 1957 REORGANIZATION OF THE STAATSSICHERHEITSDIENST IN EAST-GERMANY
R. Engelmann et S. Schumann, CIRCUMSTANCES LEADING TO A POLICE STATE - THE CONFLICT BETWEEN ULBRICHT,WALTER AND WOLLWEBER,ERNST AND THE 1957 REORGANIZATION OF THE STAATSSICHERHEITSDIENST IN EAST-GERMANY, Vierteljahrshefte fur Zeitgeschichte, 43(2), 1995, pp. 341-378