Vasilenko, Natalia, Marck Khaykin, Natalia Kirsanova, Arunas Lapinskas, and Larisa Makhova. “Issues for Development of Economic System for Subsurface Resource Management in Russia through Lens of Economic Process Servitization”. International Journal of Energy Economics and Policy 10, no. 1 (November 13, 2019): 44–48. Accessed September 24, 2022. https://www.econjournals.com/index.php/ijeep/article/view/8303.