https://novayagazeta.ru/articles/2021/10/07/svoikh-ne-raskryvaem
https://novayagazeta.ru/articles/2021/10/06/zakazchik-izvesten-emu-prosto-vydali-indulgentsiiu
https://jamestown.org/program/the-realities-of-russian-military-shipbuilding-part-one/
https://jamestown.org/program/clashes-intensify-between-moscow-and-circassians-on-key-issues/
https://www.rbc.ru/newspaper/2021/10/04/61571a279a79478e0bc0b011
https://jamestown.org/program/russias-military-boosts-electromagnetic-spectrum-capability/