https://www.bwb.gv.at/fileadmin/user_upload/Abschlussbericht_BU_Kraftstoffe_2022_final_barrierefrei.pdf
https://research.berenberg.com/report/1F2D7879F366F97B76F9E29341CA3D06
https://henryjacksonsociety.org/wp-content/uploads/2020/12/HJS-Russian-Sanctions-Report-web.pdf