93 Sobre el tema, véanse: M. Bourdeaux, Patriarch and Prophet: Persecution of the Russian Orthodox Church Today, Londres, 1969; ídem, Religious Ferment in Russia: Protestant Opposition to Soviet Religious Policy, Londres, 1968; W. Fletcher, A Study in Survival, Nueva York, 1965; D. Pospielovsky, op. cit, págs. 219 y sigs; A. Valentinov, Religuiia i tserkov v SSSR, Moscú, 1960; G. Vins, Let the Waters Roar. Evangelists in the Gulag, Grand Rapids, 1989.<<