Report of the Chairman of the State Security Committee of the Council of Ministers of the Ukrainian SSR Fedorchuk to the Central Committee of the Communist Party of Ukraine to comrade V.V. Shcherbytsky about the Chinese special services work, March 21, 1974. [Soobshcheniye Predsedatelya Komiteta Gosbezopasnosti pri Sovete Ministrov Ukrainskoy SSR Fedorchuk v Tsentral'nom komitete Kommunisticheskoy partii Ukrainy tovarishchu Shcherbitskomu V.V. o rabote kitayskikh spetssluzhb]
21 marta 1974