Kramer, Andrew E. (14 August 2012). "Importing Russia's Top Gun". New York Times. Archived from the original on 27 February 2018. Retrieved 15 March 2018.
Kramer, Andrew E. (14 August 2012). "Importing Russia's Top Gun". New York Times. Archived from the original on 27 February 2018. Retrieved 15 March 2018.