The case of Otto John - New documents relating to the deposition of the Bundesamt fur Verfassungschutz Chief conducted by the Ministerium fur Staatssicherheit (MfS) and KGB
B. Stover, The case of Otto John - New documents relating to the deposition of the Bundesamt fur Verfassungschutz Chief conducted by the Ministerium fur Staatssicherheit (MfS) and KGB, VIER ZEITG, 47(1), 1999, pp. 103-136