John Erickson The Soviet High Command: A Military-Political History, 1918–1941, Routledge, 2001. ISBN 0-7146-5178-8 /wiki/John_Erickson_(historian)
Short, Neil (2008). The Stalin and Molotov Lines: Soviet Western Defences 1928–41. Oxford: Osprey Publishing. p. 56. ISBN 978-1-84603-192-2. 978-1-84603-192-2
David M. Glantz, Barbarossa Derailed: The Battle for Smolensk, 10 July - 10 September 1941, Vol.1, p.26, Helion & Co., 2010. /wiki/David_M._Glantz
Short, Neil (2008). The Stalin and Molotov Lines: Soviet Western Defences 1928–41. Oxford: Osprey Publishing. p. 56. ISBN 978-1-84603-192-2. 978-1-84603-192-2
Short, Neil (2008). The Stalin and Molotov Lines: Soviet Western Defences 1928–41. Oxford: Osprey Publishing. p. 56. ISBN 978-1-84603-192-2. 978-1-84603-192-2
Short, Neil (2008). The Stalin and Molotov Lines: Soviet Western Defences 1928–41. Oxford: Osprey Publishing. p. 56. ISBN 978-1-84603-192-2. 978-1-84603-192-2