
https://pism.pl/webroot/upload/files/Biuletyn/PISM%20Bulletin%20no%2090%20(2007)%202%20June%202022.pdf

https://www.bakerinstitute.org/media/files/files/ac785a2b/BI-Brief-071817-CES_Russia1.pdf

https://www.globalwitness.org/en/campaigns/stop-russian-oil/one-year-western-companies-traded-384-million-barrels-russian-oil/