TAHERIFARD, Ali; FARIMANI, Fazel Moridi; NEGIN-TAJI, Zarir. The Efficiency of Upstream Petroleum Contracts: Risk Service Contract in Focus. International Journal of Energy Economics and Policy, [S. l.], v. 15, n. 4, p. 367–377, 2025. DOI: 10.32479/ijeep.18363. Disponível em: https://www.econjournals.com/index.php/ijeep/article/view/18363. Acesso em: 6 dec. 2025.