1. Francisco , “German Democratic Republic,” p. 14
2. Tagliabue John , “East German Chief Will Visit Rome,” New York Times, 6 04 1985, p. 2
3. Seyppl , “Ich bin,” pp. 16, 112–13
4. Seiffert Wolfgang , “Eine verlorene Schlacht,” Der Spiegel, 10 09 1984, p. 20