https://novayagazeta.ru/articles/2021/09/21/nadavili-na-gaz
https://jamestown.org/program/fake-elections-and-russias-belligerent-foreign-policy/
https://www.dw.com/ru/germanija-poka-prosto-ignoriruet-shantazh-gazproma/a-59191215
http://altanalyses.org/en/2021/09/13/ever-greater-failure-eu-energy-policy/
https://www.ft.com/content/282728be-dd6f-46e0-9702-e603dbeb1c26