¹ Galina Vishnévskaia, Galina. A Russian Story, Harcourt Brace Jovanovich Publishers, Orlando, 1984, p. 400.

² Solomon Volkov, Testimony. The Memoirs of Dmitri Shostakovich, as Related and Edited by Solomon Volkov, Harper and Row Publishers, Nueva York, 1979.

³ A Shostakovich Casebook, Malcolm Hamrick Brown (ed.), Indiana University Press, Bloomington, 2004, p. 44.

⁴ Ian MacDonald, The New Shostakovich, Northeastern University Press, Gloucestershire, 1990.