Perepelitsa, D. G., and O. A. Zhdanova. “Peculiarities of Investment Decision-Making in the Oil and Gas Industry Aimed to Ensure Sustainable Growth of the Russian Economy”. International Journal of Energy Economics and Policy, vol. 7, no. 1, Jan. 2017, pp. 216-23, https://econjournals.com/index.php/ijeep/article/view/3859.