DE AVILA ARROYO, J. P.; YAGO, M.; NASIR, M. A.; WU, J. Strategic Alliance in Energy Sector & Implications for Economic Growth and Technical Efficiency: The Case of Petrobras and Galp. International Journal of Energy Economics and Policy, [S. l.], v. 4, n. 4, p. 759–771, 2014. Disponível em: https://www.econjournals.com/index.php/ijeep/article/view/953. Acesso em: 20 apr. 2024.