BAKHTAVORYAN, Rafael. A Demand Systems Analysis of Energy Sources in the United States. International Journal of Energy Economics and Policy, [S. l.], v. 16, n. 1, p. 457–464, 2025. DOI: 10.32479/ijeep.21808. Disponível em: https://www.econjournals.com/index.php/ijeep/article/view/21808. Acesso em: 10 jan. 2026.