ARTEMKINA, Liya R.; SOPILKO, Natalya Y.; MYASNIKOVA, Olga Y.; EREMINA, Irina U.; BONDARCHUK, Nataliya V.; SHAMSHEEV, Sergey V. The Model of Upstream Investment Portfolio in the Mature Regions. International Journal of Energy Economics and Policy, [S. l.], v. 9, n. 4, p. 173–180, 2019. Disponível em: https://econjournals.net.tr/index.php/ijeep/article/view/7965. Acesso em: 12 nov. 2024.