KIRICHENKO, Olga S.; KOMZOLOV, Alexey A.; NAZAROVA, Yulia A.; SHCHERBAKOVA, Natalya S.; KIRICHENKO, Tatiana V. Diversification of Russian Oil and Gas Upstream Companies. International Journal of Energy Economics and Policy, [S. l.], v. 10, n. 3, p. 112–118, 2020. Disponível em: https://mail.econjournals.com/index.php/ijeep/article/view/9194. Acesso em: 23 dec. 2024.