ROSA, D. J. Optimal Utilization Of Alternative Energy Sources. International Business & Economics Research Journal (IBER), [S. l.], v. 8, n. 5, 2009. DOI: 10.19030/iber.v8i5.3134. Disponível em: https://clutejournals.com/index.php/IBER/article/view/3134. Acesso em: 17 jul. 2024.