Solovieva, Yuliana Vladimirovna, Maxim Vasilyevich Chernyaev, and Ekaterina Vladimirovna Nezhnikova. 2021. “Brent and Urals Oil Price Control Mechanisms”. International Journal of Energy Economics and Policy 11 (3):571-77. https://econjournals.com/index.php/ijeep/article/view/11022.