https://www.bbc.com/russian/news-58837389
https://www.rosbalt.ru/piter/2021/10/07/1925050.html
https://jamestown.org/program/the-realities-of-russian-military-shipbuilding-part-one/
https://www.rosbalt.ru/blogs/2021/10/05/1924631.html
https://www.rbc.ru/newspaper/2021/10/04/61571a279a79478e0bc0b011
https://www.kp.ru/daily/28335.5/4480309/