https://theins.ru/history/245881
http://www.kasparov.ru/material.php?id=617293B719EFC
https://www.bbc.com/russian/features-40340292
https://www.bbc.com/russian/media-58806474
https://novayagazeta.ru/articles/2021/10/07/gazprom-idet-na-shantazh
https://www.radiosvoboda.org/a/viyna-ukrayiny-z-rosiyeyu-na-usikh-frontakh/31489090.html