https://www.ng.ru/economics/2021-12-06/1_8319_export.html
https://www.radiosvoboda.org/a/news-rosija-sekretnyj-export/31565554.html
https://www.rbc.ru/newspaper/2021/11/17/6193a5839a7947675beb0e7f
https://www.atlanticcouncil.org/blogs/iransource/is-iran-going-on-an-arms-shopping-spree-in-moscow/
https://jamestown.org/program/the-realities-of-russian-military-shipbuilding-part-one/
https://www.rbc.ru/newspaper/2021/10/04/61571a279a79478e0bc0b011